Animal Stories - Comet Goldfish

Animal-World Information about: Comet Goldfish

Comet Goldfish look just like regular goldfish but with a much longer and more deeply forked tail fin!
Latest Animal Stories
lady - 2012-01-10
I fave a few gild fish and they are growing big the problem is they have red coloring on there body what does it mean

Nikki - 2012-01-04
My daughter as 3 small comet fish. None are larger than 2 inches. They are in a secure tank void of any spaces for them to jump out. My littlest one is missing. No one was near he tank and I can't find it in the tank anywhere. I was so freaked out, I even looked in the filter. I don't have any explanation for the missing fish. Has anyone ever had a situation similar?

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  • Nikki - 2012-01-04
    Mystery solved. The little one must have been hiding in a crevice of the ornamental piece located inside of the tank. After I submitted my comment, I went to the tank where little one was briskly swimming along with the other two. I guess I panicked but I seriously looked for it for over an hour.
Carolann - 2010-08-26
I have an adopted Comet fish. When found it was covered in Ich. I have been able to revive his condition thru water changes and medical treatment. However, the bright orange color of the fish has begun to change to white leaving only a tip or two of orange on the body. I just noticed a lump by his upper top fin that looks a blister. Does anyone have any comments about the color change and the blister?

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  • ivy - 2011-12-21
    i do not know about the blister but the changing of colour can be because there is not enough light.
Luyana - 2011-11-23
I recently bought 2 comet goldfish four days ago. While one is bright gold and very active, and eats eagerly, the other fish has gained black spots, it didn't seem to be eating well the first few days (today was the first day I saw it go to the top of the tank to eat). I read some of this being about the tank being dirty and to clean once a week, but I haven't even had a full week to clean it yet.
I did all that the PetSmart worker reccomended. He said a 10 gallon tank was the minimum for 2 fish, I have that, I bought the water conditioner and have a filter. I feed them twice a day. I am worried about the fish with black spots, and how to diagnose him and care for him. I am also concerned if this will be contagious to his tank-mate.
Any advice will help! Thanks!

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  • Charlie Roche - 2011-11-24
    Scroll up in the article fish diseases and symptoms and look at flukes. Also look at the other symptoms (in case) but flukes sound like what you are describing. The corresponding treatment is listed. Good luck.
  • Rohit Rahul - 2011-12-09

    There are two reasons for this. First, the fish is stressed out in the new environment and that is why was sitting at the bottom. Second thing, the ammonia level in the aquarium must be very high leading to black spots on fish. It generally happens with the new aquariums when not properly cycled. Now since it has not been cycled, the easiest way to take care of it is to change the 30% of the water every other day. Remember when you change the water do not take out the water from the won't help.. try to take out water from the will take out the waste as well making the water more cleaner and healthier for fishes... u can easily get a vacuum cleaner from fish shop. Ok, one more thing, please dechlorinate the water before adding it to the aquarium. You can buy the de chlorinators from the aquarium shop.. Hope these suggestion helps you.
  • stuart gorham - 2011-12-13
    We have one comet goldfish, eight years old now, extremely handsome and healthy. We change the water twice a year now. At first we changed the water whenever it wasn't "perfect" i.e. crystal clear. What has become apparent is that fin rot coincided with frequent water changes. Fish create their own enviroment and the water needs time to balance and settle down, often 7-10 days, fish don't mind a little bit of algae anyy way, they need their greens too. Always make sure the filter is clean and the air supply is freely flowing, do not put plants of any sort in the tank as they are the most common cause of disease, give each fish three match head size pellets per day, a feww grains of cooked rice or a few peas are good.
Anonymous - 2011-09-21
Sarasa pond fish how long will she carry her eggs?

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  • Charlie Roche - 2011-09-21
    Goldfish mature at about 3 to 4 years of age. Then as temperatures rise the female begins to produce eggs, and when the eggs are mature, the female emits hormones indicating she is ready to spawn. However, I'm not sure how long it takes for the eggs to develop into maturity.

    Once the female is ready, the male will push the female against planted matter, which stimulates her to drop the eggs. The eggs will attach to the plants and other surfaces. The male will fertilize them and then it takes about 4 days for them to hatch.
Denise - 2011-09-18
I have a mixture of comets (red/white) in my pond mixed with all types of goldfish and koi. They have all bred with each other and there are some neat colors. In the winter the pond freezes and the fish go to the bottom until the spring when it thaws out. These are great pond fish! Very easy to raise and get along well with others.The pond is about 3 ft. in the deepest spots.

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  • Anonymous - 2011-09-19
    I'd like to do that some day - on my bucket list.
alan kool - 2011-07-21
Wazzup forum.

So, I plan to get two very small/young comet goldfish. I have a 80 litre tank ( which is huge to me), is that a big enough tank? I wanted to ask as I know that they grow large and that small space can stunt their growth.

Btw, i might get one or more ancistrus fish to add to that later :)

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  • Charlie Roche - 2011-07-23
    80 liters is about a 20 galllon tank. The comet goldfish will grow to about 4 inches each. 20 gallons and subtract room for gravel, plants and decorations and you have about a 17 gallon tank. Figure one gallon for each adult inch of fish and that is aproximate capacity. So your 80 liter is big enough for your two comets. Enjoy
  • alan kool - 2011-07-26
    "4 inches"!? O.o
    I was hoping they would grow larger?
donna - 2010-01-31
My comet isn't very well, she has black spots on her mouth and various parts of the body, she just lies on the bottom of the tank and isn't eating.... can anyone help.. I have had her nearly 5 years and normally she is so active..
Thanks Donna

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  • Samantha - 2010-02-28
    Did you change anything? Like her surroundings or add more or less water, different tank?
  • stephen - 2010-03-17
    This isn't a good thing, try to find a website with good medical information, pictures to match etc. Goldfish are hardy but once they turn the corner it is an uphill battle to get them back. You can do it though, just make sure you take any carbon in your filter out while you medicate. Adjust water and filter flow so he doesn't get sucked up or damaged. You might even want to think about a hanging basket type thing so he can't hurt himself on the bottom. Above all check your water quality, although this sounds like a fungus to me water quality issues can do some really weird things. Good luck!
  • Amy - 2010-03-22
    I just had the same thing happen to my 3 of my pond comets that were between 7-9 yrs old, I have 4 fish in my outdoor pond had the water tested which was fine---they had some sort of cold water bacteria infection but by the time we figured out what it was and medicated the water they all died. I have one shubunkin left that's 11 yrs old and seems to be just fine.....good luck, Desa Fin is what we used if that helps.
    (Editor's Note ... Heres a link to Desa Fin)
  • Kambodiaboz - 2010-04-08
    She'll be fine. It's problably that she's new to the tank, just like my comet goldfish, it acted like that. But sooner later it will eat n swim around.
  • Elaine - 2010-07-05
    Maybe a case of black ich.
  • Chris - 2010-07-07
    That's what my fish had too! Only the spots were red, he was about 8 years old and yes he did die this morning, what could help your fish is an AquaSafe Water Conditioner for Gold fish. It helps any type of gold fish. if your fish also starts to lose it's scales that means it's dieing too.=(
  • ally - 2010-10-11
    I hate to tell you but I think your fish is dead.
  • Lisa - 2010-11-14
    My fish is doing exactly the same thing.
  • shaunna - 2010-11-16
    You should get a new one or try to not give her food then she'll feel bad and will get hungry then you can feed her.
  • Kshal - 2010-11-21
    Being an amateur in breeding Comets......I wish to tell you that maybe your comet is hurt by any part or object from your aquarium... or it may even be infection from other fish in your tank.... You can use fish medicines......or try to isolate your fish.
  • Gina - 2010-11-21
    What size of tank is she in? Do you do weekly water changes? Doing 30% water changes weekly might turn her around. The black spots might be burns or infection from bad water quality. If you think it's the water. Change 50% and use a fresh filter.
  • benoo - 2010-11-30
    Hi you should check either the wiki or your local non petco/pet smart pet store if not do a google search.
  • jason - 2010-12-11
    It depends maybe you have it alone...usually comets can't be alone for too long or they will a reminder comets can't be over crowded either because they can easily get emonia and slowly die.
  • jason - 2010-12-11
    Or maybe it all ready has emonia. My comet had purple spots so i took it to my job and it had a emonia. . . Trust me i am a manager in a vet center i know what i'm saying.
  • Denise - 2011-01-20
    I hope your comet goldfish is doing well. I do know that if black spots appear on the fish you may need to change the water more often. The fishes urine may burn their scales. My comet had the same thing. I change the water now once a week and change the filter. They do better with a filter in the tank. I hope I'm not too late!
  • elizabeth - 2011-04-15
    What I think - They are cool fish.
  • Lily Mae Flynn - 2011-07-15
    Get some quick medical attention to that fish I had a fish once and it died from doing exactly what your fish is doing.
  • alan kool - 2011-07-23
    Wazzup forum.

    So, I plan to get two very small/young comet goldfish. I have a 80 litre tank ( which is huge to me), is that a big enough tank? I wanted to ask as I know that they grow large and that small space can stunt their growth.

    Btw, i might get one or more ancistrus fish to add to that later :)
Lani - 2010-04-06
I bought my comet today and now the bottom anal fin is falling off. He is having difficulty swimming, I think he got it from the plant in his new tank. It wasnt like that when I bought him, i'm really worried. Will he die? and is there anything I can do to prevent him from dying?

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  • alan kool - 2011-07-23
    I'm no professional, but it sounds like you did not dechlorinate your water? if not the chlorine is very toxic to the fish and will damage/burn their fins off :(

    good luck
  • Charlie Roche - 2011-07-23
    80 liters is a 20 gallong tank (about). If you subtract 3 gallons from the 20 - you have 17 available gallons. The Comets grow to about 4 inches each and so you have enough space for them Figure 1 gallon for every 1 inch of adult size fish. Have fun.
ally - 2010-12-17
Hello, I have a comet gold fish..

I got it today and I put it in a 1 gallon tank..
I have been reading lots of internet sites and it says that you should never put a comet in a 1 gal tank.
He is only 1-2 inches long and he has lots of space to move around.
I will clean out his tank every week
but should I change him to a bigger tank?
And if so how big?


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  • alan kool - 2011-07-20
    Yep, you should because 1 gallon is quite small, and the fishes growth will be stunted significantly ( also leading to an earlier and painful detah.) Even if its small, at least try to get a two gallon tank.

    ( your comet should do fine now, but try to sort out a new tank in the near future.)