Shortfin Lionfish

Shortfin Lionfish, Fuzzy Dwarf Lionfish, Dwarf Lionfish, Shortfin Turkeyfish

Family: Scorpaenidae Picture of a Shortfin Lionfish or Dwarf LionfishDendrochirus brachypterus
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Do they eat clownfish and damsels if not I'm getting one. ... (more)  coree

This “fuzzy” dwarf lionfish tends to spend more time in the open, making them a great choice for aquarists with smaller 55 gallon tanks.  

The Shortfin Lionfish is a dwarfed version of larger lionfish, yet they still have a large mouth, beautiful fins, and venomous spines.  Their color variations are purplish brown, yellow, red, reddish yellow and the most commonly seen color, brown.  The stripes on the fins are highly contrasting, yet the body’s vertical bars, which are a dark and lighter version of the overall color, are more subtle.  The exception is the yellow variation which only has bright yellow on the fins and the body is pinkish to red with vertical darker bands of the pinkish red coloring.   Their scales have an almost fuzzy appearance to them and their fins are quite a bit shorter than their large cousins.  For example, their middle dorsal fin is only 1.7’,” which is much shorter than the depth of their body which is 2.6.”  Some fins may have dark spots within the stripes.  Females have smaller heads and shorter pectoral fins, reaching only to the base of the caudal peduncle area.  They also have those “chin whiskers” that the larger lionfish have.  The Shortfin Lionfish grows up to 6.7” (17 cm), may live the typical 10 years of other lionfish, and is best left to the intermediate aquarist. 

 

Lionfish are in the Scorpaenidae family, and by looking at that name, one can imagine the word “scorpion,” giving away the fact that they are indeed venomous.  While there are a few horror stories of Lionfish killing people, it is rare, in fact so far what kills people is not the sting but the secondary infection that was not cared for.   Within this family, Lionfish have the weakest amount of venom, with Stonefish (Synanceia sp.) being the fish with the very potent and more dangerous venom which very well can kill a person.  While cleaning the tank or arranging rock or corals, the aquarist’s hand is a perceived threat.  The Shortfin Lionfish will direct their venomous spines in the direction of any threat.  Be aware that if you let your hand or arm drift over where the lionfish is hiding out, they can easily arch their back and sting, even though it seems you are far enough away!  Even if they seem like they are backing away from your hand or arm, they are just usually just trying to get a “running start” to lance you!  They wag their dorsal fin back and forth as they approach prey, so by the time the prey figures out what is going on, they have been cornered and, “the rest is history!”

 

The Shortfin Lionfish is moderately difficult to care for, due to their need for smaller live foods, especially in the beginning.  They eat 11 small prey items a day instead of the typical 4 of large lionfish.  Shrimp and crabs from saltwater sources would be best and the most healthy.  Even if one wears rubber gloves, lionfish spines will still stab right through them!   If you are stung, quickly soak the affected area in very hot, (110 to 113˚F) though not scalding water for 30 to 40 minutes or the pain subsides.  If there isn’t any hot water available, a hair dryer set on high for the same time will work.  The heat of the water or hair dryer will denature or break down the venom.  Next, elevate the affected area and head to the hospital.  With most people, within 24 hours, the pain is gone, however some have numbness in the area for a longer period.   According to accurately reported incidents, including 146 patients, 92% to 100% of patents experienced local pain, 60% experienced swelling, 22% pain to the extremity of the limb, 13% experience systematic symptoms, 1% experienced tissue death and 0% experienced death.  A trip to the hospital is still advisable just in case there is a more adverse reaction and getting meds for the pain will be welcomed!  X-rays to show if any of the spine is left in the body is very important, since infection can start if left in the body.  This can cause bacterial sepsis, which definitely WILL kill a person!

 

You can keep them as a single specimen or as one male with several females numbering from 3 to 5 in a group.  Buy one large one and several smaller Shortfin Lionfish.  Do not house with lionfish in the Pterois genus since they will fight and the Pterois tend to eat them if they are small enough!  They also do not get along well with others in their genus who are solitary or more aggressive then they are.  When it comes to other fish, do not house with groupers and other fast moving predators, since the Shortfin Lionfish will not be able to get enough to eat.  Large angelfish, puffers and non-planktivore triggerfish will pick on their long fins.  The other fish in the tank should be their size or larger, and although they typically eat small crabs and shrimp, a small fish would be at risk.  Shortfin Lionfish tend to keep to themselves and the lack of super long fins make them less likely to accidentally stab a tank mate, though this is always a risk with lionfish.  The larger the tank the better for these “pokey” encounters! 

 

 

The tank should be 55 gallons for one Shortfin Lionfish, and should have several places for them to comfortably hide upside down during the day.  If you want one male and several females, the tank should be 75 to 100 gallons or more with plenty of hiding places.  Arrange rock work to form overhangs, caves and other formations allowing them the ability to rest upside down underneath.  They usually share their spot with others of their species, so make at least one area large enough for all your Shortfin Lionfish to fit under.  They mostly eat small crabs and shrimp, however they may  periodically eat small fish like small cardinalfish that happen to also hide in caves at night with them.  Still, provide several places for each lionfish to shelter and separate any that fight.  Once they feel secure they will spend more time in the open, which makes them a better pet compared to their close relative, the Zebra Lionfish who tends to hide most of the time.  Feed them marine sourced foods, since fish like goldfish or guppies are too fatty and are not typically accepted, since these lions like shrimp and crustaceans.  To help them to start eating, if nothing else works, try live fiddler crabs and glass shrimp.  Once they adjust, wait 3 to 4 days, getting them good and hungry, then put crab and shrimp flesh onto a clear feeding rod and wiggle it in front of them.  Repeat every week until they adjust and make sure the flesh is small since they do not eat large items.  Do not aim pumps in the area that they hide in during the day.  They can get used to lighting, but extra overhangs at the lower portion of the tank will help them adjust.

For more Information on keeping marine fish see:
Guide to a Happy, Healthy Marine Aquarium


  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Actinopterygii
  • Order: Scorpaeniformes
  • Family: Scorpaenidae
  • Genus: Dendrochirus
  • Species: brachypterus
Shortfin Lionfish, Dwarf Fuzzy Lionfish dendrochirus brachypterus
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Video of a juvenile Shortfin Lionfish

This is a great example of the relatively passive nature of the Shortfin or Fuzzy Dwarf Lionfish. Although they will not bother fish their size or larger, that damsel may be in for a rude awakening one day when this little guy is almost 7" long! This is a very well put together tank with lots of room for the larger tanks and the little blue eyed lionfish!

Lionfishing - The Fuzzy Dwarf Lionfish (Dendrochirus brachypterus)
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An aquarist feeding a Shortfin or Fuzzy Dwarf Lionfish

A great video of a Shortfin/Fuzzy Dwarf Lionfish who has been successfully trained to eat prepared foods! The video shows they are true to their nature, and do not like very large pieces of food since the large piece of silverside was not eaten and had to be removed. Do not feed freeze dried krill, however frozen thawed is acceptable and even mysis and small pieces of crab flesh are welcome and suggested to keep their diet varied. Proper tank size for one of these fish is 55 gallons due to their large input and output when it comes to feeding! Larger tanks will keep the water cleaner, which they need to stay healthy.

Shortfin Lionfish - Quick Aquarium Care
  • Aquarist Experience Level: Intermediate
  • Aquarium Hardiness: Moderately Difficult
  • Minimum Tank Size: 55 gal (208 L)
  • Size of fish - inches: 6.7 inches (17.02 cm)
  • Temperament: Semi-aggressive
  • Temperature: 70.0 to 80.0° F (21.1 to 26.7° C)
  • Range ph: 8.1-8.4
  • Diet Type: Carnivore
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Habitat: Distribution / Background

The Shortfin Lionfish, Pterois Shortfin, was first described by Cuvier in 1829.  They are known by many common names such as: Shortfin Lionfish, Dwarf Lionfish, Featherfish, Shortfin Turkeyfish, Shortspined Butterfly-Cod, Zebra Firefish, and Fuzzy Dwarf Lionfish.  Most of these names refer to their smaller fins or striping, and the term “Firefish” may refer to the fiery pain of being stung. 

 

Distribution - Habitat:


The Shortfin Lionfish is found in the Indo-West Pacific from the Red Sea and East Africa to Samoa, Tonga and then northward to southern Japan.  From there they are found south toward Lord Howe Island, Marinana Islands (Micronesia), the Arafura Sea and Australia.  They prefer reef flats and shallow lagoons.  In Madagascar and Papua New Guinea they inhabit seagrass beds on inner-reef flats.  Northern Red Sea residents of Shortfin Lionfish are found close to shore, on muddy bottoms.  There they are the only species of lionfish found in that habitat. They will also hide near isolated rocks, small coral heads and coral fragments, although they can also be found within dense coral growth.  These little lionfish are found at depths from 7 and 262 feet (2 to 80 m); however they are most often found at 7 to 98 feet (30 m).  At night, they will emerge from their upside-down day time slumber to hunt foods like small crabs and shrimp, but will occasionally eat isopods and polychaete worms.  Shortfin Lionfish will eat about 11 small prey items in one night, instead of 4 larger items like the large lionfish 

 

Similar Species:

Japanese Lionfish (Dendriochirus bellus):  Cold water lionfish that has a similar appearance, but without that “fuzzy” look.  And the fact that they are a cold water species.

  • Scientific Name: Dendrochirus brachypterus
  • Social Grouping: Harems - One male with several females and one or more juveniles for a group size of up to 10 individuals in the wild.

  • IUCN Red List: NE - Not Evaluated or not listed

Description

The Shortfin Lionfish is a dwarfed version of larger lionfish, but has enough distinguishing features that is it hard to confuse them from others, even in the dwarf lionfish family.   They are deep bodied, being 2.6” from back to belly in adults.  Where they differ are their fuzzy scales and much smaller fin size.  Their dorsal fins are only 1.7” long and their body is a solid color with darker vertical bars.  One rare variation has bright yellow fins with a pinkish red body, alternating with reddish bars.  The second variation is red with pink and red stripes on the body and then gold to yellow stripes on the fins that alternate with red stripes.  These red stripes can also have black spots on them.  The last and most common color variation is brown with brown and pinkish stripes on the body, and pale yellow and dark brown striped fins.  They all have blueish eyes, and their fin rays are connected by a membrane which covers most of the rays to the tip, so they lack the “threadlike” appearance of bare rays that other lionfish have.  They do have those “chin whiskers” that the larger lionfish have.  Females have smaller heads and shorter pectoral fins, reaching only to the base of the caudal peduncle and their bellies, mouth and chin turn a silver white color when they are ready to spawn.  Females also have 4 to 6 stripes on their pectoral fins and males have 6 to 10 bands on their pectoral fins.  Males are a solid darker color during spawning.  

 

When hunting, the Shortfin Lionfish will move their dorsal spines from side to side in an exaggerated sweeping motion.  This may distract the prey and/or may help the lionfish strike with more accuracy; however it is unknown if both or just one of these aspects are the case.  Once they are close to the prey, they can strike quickly before lunch gets away.  They will also use cornering to trap prey.  Males get much darker all over when spawning.  They grow to to 6.7” (17 cm) and may live 10 years like other lionfish.  They are found in groups of 1 male and up to 10 other Shortfin Lionfish, most of which are female with one or two juveniles.

  • Size of fish - inches: 6.7 inches (17.02 cm) - 6.7” (17cm)
  • Lifespan: 10 years - They may be similar to other lionfish that live 10 years or more in captivity.

Fish Keeping Difficulty

These fish are moderately difficult, and best kept by intermediate aquarists.  Shortfin Lionfish insist on eating multiple small live foods, however with persistence they can be weaned to prepared foods.  Although older literature states that 30 gallons is acceptable, the new thought and most commonly accepted tank size is 55 gallons (208 liters) for one.  If adding more than one Shortfin Lionfish, introduce one large individual and several small individuals, at the same time, in a tank that is 75 to 100 gallons.  When choosing your Shortfin Lionfish from the fish store, make sure the fins are free of fin rot, the muscles on the upper back look filled in and not thinning from lack of eating, and ask them to feed the fish.  Their gills only move about 30 times a minute, so if it is faster, they may have a parasite infection in the gills.  Do not house with other lionfish since large lionfish will eat them if they can fit into their mouth and other dwarf sized lionfish tend to be solitary and/or much more aggressive.  Do not house with aggressive predatorial fish that can compete with them for food or can harass them.  

  • Aquarium Hardiness: Moderately Difficult - Due to their need for small live foods, making it more difficult to wean them onto prepared foods.
  • Aquarist Experience Level: Intermediate

Foods and Feeding

These carnivores prefer shrimp and crab meat over fish meat.  Flake and pellet food is generally not accepted, although some specimens have been known to eat shrimp based pellets.  Pellets should not be the main fare.  Avoid freeze dried krill since it can cause gastrointestinal blockage (which can kill the fish) and nutritional deficiencies which can lead to the growth of a goiter.  Feed them any fresh or frozen then thawed raw crab and shrimp meat from marine sources to vary the diet.  You can feed them frozen/thawed mysis as well.  Offer them small pieces of food, equivalent to glass shrimp in size.  Offer small pieces of food to satiation 2 to 3 times a week, unless water temperature is on the lower end of the spectrum, then feed less often.  Supplement with Selcon or other vitamins for marine fish several times a week.

  • Diet Type: Carnivore
  • Flake Food: No - They generally will not eat flake.
  • Tablet / Pellet: Occasionally - Most won't eat pellets, however if yours does, it should be the shrimp based large pellets. 

  • Live foods (fishes, shrimps, worms): Some of Diet - Glass shrimp and Fiddler Crabs to induce an eating response.
  • Meaty Food: All of Diet
  • Feeding Frequency: Daily - Feed 2 to 3 times a week, less if on the water temperature is on the cooler side.


Aquarium Care

Reef tanks:
-Medium sized tanks from 55 to 90 gallons, perform 15% bi-weekly. 
-Large Tanks 100 gallons and over, once water is aged and stable can be changed 10% bi-weekly to 20% monthly, depending on bioload.


Fish only tanks:*
-Medium sized tanks from 55 to 90 gallons, perform 20% to 30% monthly depending on bioload. 
-Large Tanks 100 gallons and over, once water is aged and stable can be changed 20% to 30% every 6 weeks depending on bioload.

For more information on maintaining a saltwater aquarium see: Saltwater Aquarium Basics: Maintenance. A reef tank will require specialized filtration and lighting equipment. Regular water changes done  bi-weekly will help replace the trace elements that the fish and corals use up.  Learn more about reef keeping see: Mini Reef Aquarium Basics.

 

*Note:  If this is the ONLY fish in the tank, with no corals or other fish you can get away 20% monthly.
 

  • Water Changes: Monthly - Bi-weekly in a reef setting.

Aquarium Setup

Provide your single Shortfin Lionfish with a 55 gallon tank that has several places for them to hide, such as caves, crevices and overhangs.  If keeping a harem, provide them with 75 to 100 gallons and many places to hide and add one large with several small specimens at the same time.  Remove any that fight with each other.  Do not house in a nano tank, since they will outgrow the tank rapidly.  Substrate and light do not matter to the lionfish, but a steady temperature of 70 to 80˚F (21 - 27˚C) is appreciated.  They have been known to breed in larger tanks with the temperature between 74 and 78˚F (23 to 26˚C).  As they adjust, they will come out into the open more often and can be found at all levels of the tank, either upside-down under a ledge or laying on the substrate. 

  • Minimum Tank Size: 55 gal (208 L) - 55 gallons (208 liters) - A harem will need 75 to 100 gallons for one male and 2 to 5 females).
  • Suitable for Nano Tank: No
  • Live Rock Requirement: Typical Plus Hiding Places - They like to chill upside down, so take that into consideration when forming hiding places
  • Substrate Type: Any
  • Lighting Needs: Any
  • Temperature: 70.0 to 80.0° F (21.1 to 26.7° C) - 70˚F (21˚C) 80˚F (27˚C)
  • Breeding Temperature: 76.0° F - 76˚F (24˚C)
  • Specific gravity: 1.023-1.025 SG
  • Range ph: 8.1-8.4
  • Brackish: No
  • Water Movement: Any - Keep water movement low to moderate where they sleep.

  • Water Region: All

Social Behaviors

These fish are great alone or as a harem of 3 to 5.  Males have larger heads, 6 to 10 bands on their pectoral fins and their pectoral fins extend to the middle of the caudal peduncle.  So what is the caudal peduncle area?  It is the entire fleshy part of the tail fin that starts behind where the dorsal and anal fins end (where they are connected to the body) to the point where the tail fin rays begin.  Two males will fight.  They will fight with those from the Pterois genus and will be consumed by those large lionfish!  Other dwarfs are solitary or just mean and shouldn’t be kept with your Shortfin Lionfish.

 

Only house with fish that are the same size or larger than your lion, but do not house with large and fast predators that will outcompete them for food.  Frogfish, larger lionfish, large eels, and octopus will eat your Shortfin Lionfish.   Because of their longer beautiful fins, they will be harassed and damaged by large angelfish, pufferfish and triggerfish unless the triggerfish is a peaceful planktivore.  Shortfin Lionfish will attack other scorpionfish or porcupine fish. A crowded tank will increase the risk of other fish being stabbed by the lionfish.  The tissue around the wound will die and fall off and the fish may recover; however, most fish die within 10 to 30 minutes.  The impaling may be as innocent as a fish accidentally bumping into the lionfish’s spines because they were startled or chasing food or a nutty tang that just decided, “I have GOT to get over to the other side of the tank, NOW!”  All in all the Shortfin Lionfish tend to keep to themselves, but accidents can happen.  

 

These lionfish are often kept in reef tanks because they will not bother corals.

 

They will not bother starfish, cucumbers, snails or hermit crabs.  Any other crab or shrimp is on the menu!  Tube worms are safe and so are other “decorative” inverts.  They are great for getting rid of those pesky reef crabs that sometimes hitchhike on live rock!

  • Venomous: Yes
  • Temperament: Semi-aggressive - Semi-Aggressive Predatory - Shortfin Lionfish stay to themselves and only are a threat if there are small shrimp or mobile crabs or small fish.
  • Compatible with:
    • Same species - conspecifics: Yes - One male with 3 to 5 females in captivity in a 75 to 100 gallon tank.
    • Peaceful fish (gobies, dartfish, assessors, fairy wrasses): Monitor - Smaller fish may be eaten, however full grown 6" fairy wrasses such as the large Scotts Fairy Wrasse may be okay.
    • Semi-Aggressive (anthias, clownfish, dwarf angels): Monitor - They may be okay if they are the same size as your Shortfin Lionfish.
    • Aggressive (dottybacks, 6-line & 8-line wrasse, damselfish): Monitor - Do not house with aggressive damselfish, and avoid the others on this list since they may pick on the lionfish or be eaten due to their small size.
    • Large Semi-Aggressive (tangs, large angels, large wrasses): Monitor - Make sure your lionfish is getting enough food with fast feeders like wrasses. Do not house with large angelfish, non-planktivore triggers or pufferfish.
    • Large Aggressive, Predatory (lionfish, groupers, soapfish): Monitor - Frogfish, larger lionfish and large eels have been known to eat lionfish with no ill effects
    • Slow Swimmers & Eaters (seahorses, pipefish, mandarins): Threat
    • Anemones: Safe
    • Mushroom Anemones - Corallimorphs: Safe
    • LPS corals: Safe
    • SPS corals: Safe
    • Gorgonians, Sea Fans: Safe
    • Leather Corals: Safe
    • Soft Corals (xenias, tree corals): Safe
    • Star Polyps, Organ Pipe Coral: Safe
    • Zoanthids - Button Polyps, Sea Mats: Safe
    • Sponges, Tunicates: Safe
    • Shrimps, Crabs, Snails: Monitor - Shouldn't be a threat to snails, however shrimp and crabs (excluding hermits) will be consumed.
    • Starfish: Safe
    • Feather Dusters, Bristle Worms, Flatworms: Monitor - They will eat polychaete worms to supplement their diet.
    • Clams, Scallops, Oysters: Safe
    • Copepods, Amphipods, Mini Brittle Stars: Safe

Sex: Sexual differences

Males are larger with larger heads, 6 to 10 bands on their longer pectoral fins and will become a darker solid color when courting. 

Breeding / Reproduction

The Shortfin Lionfish are in harems of one male and 2 to 10 other individuals in the wild, with most being females and a few juveniles.  They will hide out in the same cave during the day.  When it is time to spawn,  the male will look for the female with a silvery white belly, gill and mouth area that has a white line from the eye to the chin skin flap.  Right before spawning females swell with eggs.  The male will court the female 20 to 30 minutes before sundown by first assessing if the female is receptive.  If she is, he will swim upwards into the water column 10 to 15 times before the female joins him.  When she is ready to let go of her 2 large egg balls, he will swim under her and push her upward toward the surface of the water and nip at those white skin flaps on her chin.  Her genital pore will enlarge and those 2 egg balls will be expelled containing 2,000 to 15,000 eggs, which will be fertilized by the male and will then fill with water until they are .7 to 2” in diameter (2 to 5 cm).  The advantage to these large egg balls is that they are less appealing to planktivores, giving the little babies a greater chance at survival.  These eggs will hatch in 36 hours in 78˚F (26˚C) and the larvae are a little larger than 1 mm and will feeding in 4 to 5 days when they are 2 mm long.  They may, like other lionfish, settle into the reef once they are 1” long.

 

Although they readily spawn in captivity, there are no known cases at this point where the larvae were successfully reared to a viable lionfish.

See general breeding techniques in the Breeding Marine Fish page.

  • Ease of Breeding: Difficult - They have been known to spawn in captivity, however the babies have not yet been raised successfully.

Fish Diseases

Shortfin Lionfish have a cuticle covering that is a thin membranous lining to prevent organisms from settling on them due to their sedentary lifestyle.  Once in a while, they will shed their cuticle layer to remove hitchhikers and looks like a white stringy mucus that trails behind them as they swim.  If your Shortfin Lionfish starts to shed more often, it is a sign that something is wrong with water quality, they are sick or they are stressed.  If they have good food and good water quality, they do not fall sick very often, however, the ailments they are prone to are fin rot, cloudy eyes, parasitic infections such as protozoa and worms.  Fin rot and cloudy eyes can be treated with antibiotics like nitrofurazone or similar products.   If they are infected with a parasite, use copper-based medications.  Fresh water dips and formaldehyde baths also help. 

 

If your lionfish stops eating, it can be a result of too much freeze dried krill that can cause blockage of the gastrointestinal tract.  Freeze-dried foods can also cause goiters and nutritional deficiencies.  Lockjaw is another condition where they end up with their jaw stuck in the open position and it is unclear what causes it, however, it is possible it is from hitting their jaws on rock work chasing a fish.  It usually fixes itself in a few days, although they tend to be more prone to dislocation in the future, after the first episode.  

For more information see Fish diseases.

Availability

These lionfish are found on the internet and in your LFS, however, you may have to order one an put some money down.  For the yellow color variation, be prepared to drop several hundreds of dollars!

References

Animal-World Refernces: Marine and Reef

A-Z Animals LIONFISH
Copyright © 2008 - 2013 A-Z Animals

REEFKEEPING An online magazine for the marine aquarist
Brought to you by Reef Central
Lionfish Envenomations and the Aquarist
By James W. Fatherree, M. Sc.

Author: Carrie McBirney
Lastest Animal Stories on Shortfin Lionfish


coree - 2011-11-09
Do they eat clownfish and damsels if not I'm getting one.

  • Jasmine Brough Hinesley - 2011-11-09
    It really depends on the size of both the clownfish/damsels and the lionfish you get. If they are small enough to fit in the lionfish's mouth, there is a definite possibility of them being eaten!
  • Anonymous - 2012-03-13
    OK I wiil give you them for free.
  • alana - 2020-02-14
    if the lions are still looking for home please let me know... and any info you have regarding them
Reply
Realistic reef keeper - 2009-11-21
"I just got a dwarf lionfish and I'm already in love with him. He's in a 30 gallon tank with a yellow tang, a picasso triggerfish, a clown triggerfish and a panther grouper. I love the way he watches and then boom! And the fish is gone. I would recommend this to anybody with a semi aggressive saltwater aquarium.
some fish lover!"
2009-11-01



Your tank is way to over stocked for the fish you have. You need to do more research before just filling your tank up with whatever you please. They are living creatures try using better judgment with them. You should have at least a 75 gallon tank for those fish. They will most likely die soon if they are not dead already.

  • Richard - 2010-04-10
    If you are going to keep the lionfish you need to get rid of the triggerfish and grouper too big for a 30 gal. aquarium, not fair to the fish to over stock the aquarium.
  • Steve - 2010-04-14
    I agree with that, as I am about to pick up a fuzzy dwarf lionfish and introduce him to a yellow tang, blonde naso, coral beauty, blue tang and gold stripe maroon clownfish. No fish is over 6" and they are in a six foot long 150 gallon tank established mini reef. Those fish like mine will exceed that tank and probably mine, in a short span of time. Please research what you are doing before you do it. The nitrates alone will make the fish less tolerable to the water changes you will have to do keeping all those med to large fish and a lionfish. I change 40 to 50 gallons every 2-3 weeks and that keeps my Nitrates at .08 ppm to .10 ppm.
  • aelun - 2011-06-11
    Listen you have actually got 2 rather agressive fish and as they grow they will most likely kill your other fish especially considering your tank size. If you want your your fish to survive then you'll need a much bigger tank probably 110 gallons and if you want anenomes say goodbye to your clown trigger fish.
  • Anonymous - 2012-02-01
    4 words, GET A BIGGER TANK!
  • Bill Vasalofsky - 2014-05-29
    A Panther Grouper can get up to 2 feet long and you are reccomending a 75 Gallon tank for that and two triggers, and a lion fish?  I saw a cool video of a Grouper eating a Volitan Lionfish on YouTube.  Those Clown Triggers aren't the nicest fish either.  You're really not supposed to put Trigger Fish in the same tank either.  Just some thoughts.  You probably won't have to worry about the 2 foot Grouper because they'll probably all die before it gets that big.
Reply
Anonymous - 2012-02-01
Hi, I found one of these at thatpetplace.com for $29.99 and thought it looked cool but I have never had a saltwater aquarium. I was thinking about trying to breed them by buying 3(it would also get me free shiping) and maybe turn the water brakish or something to incourage breeding. How big of a tank would I need to do this and would it also be a good idea to change the decor in the tank as the water becomes less salty?

  • Jeremy Roche - 2012-10-24
    Are you looking at Freshwater Lionfish or the shortfin lionfish selected?  These are not the best fish to start with when doing a saltwater tank.  They can deliver an inexperienced fishkeeper a nasty sting.  To do what you are talking about you would need atleast a 100 gallon tank and I am not understanding why you would reduce the salinity.  But I may be confused on which lionfish you are talking about.
Reply
allan - 2007-07-25
wow, i just bought one of these and i love to see him eat. how he stocks his prey and then bam! it's gone. definitely one of the best fishes i've ever had

  • aelun - 2011-06-11
    If you keep that lionfish you wont be able to get any more fish remember these are sentinent beings so treat them with respect and care and do some more research before getting anything else
Reply