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Polka-dot Boxfish

Yellow Boxfish ~ Blue-spotted Boxfish Family: Ostraciidae Picture of a Polka-dot Boxfish, Yellow Boxfish, or Blue-spotted Boxfish Ostracion cubicus
Latest Reader Comment - See More
You guys may be amazed to find out that I keep my yellow boxfish in a 200 gallon tank with the following: dogface puffer, porcupine puffer, 2 clownfish, 1 tomato... (more)  jay  2007-06-14

  This is a juvenile Polka-dot Boxfish, Yellow Boxfish, or Blue-spotted Boxfish. It's so cute! It's amazing that this little fellow will grow up to be an adult thats 18 inches (45 cm)!

   The Polka-dot Boxfish, Yellow Boxfish, or Blue-spotted Boxfish has an almost perfectly shaped cube for a body. It is yellow or cream colored with dark-blue spots. As they grow older the body becomes more elongated and the color can change to different colors, but mainly a yellow-green. The spots turn white with blue rings around them.

See more information on this fish in the:
Fish & Chips Newsletter!

Polka-dot / Yellow / Blue-spotted Boxfish

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


Geographic Distribution
Ostracion cubicus
Data provided by FishBase.org
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Actinopterygii
  • Order: Tetraodontiformes
  • Family: Ostraciidae
Maintenance difficulty:
   The Polka-dot Boxfish, Yellow Boxfish, or Blue-spotted Boxfish is easy to keep. Boxfish are not challenging if you feed young specimens several times a day. Start with brine shrimp.
  The puffer's teeth will continually grow throughout its life so you will need to supplement their diet with some hard shelled foods. Occasionally offering foods such as live ghost shrimp and various live snails will keep their teeth worn down.

Maintenance:
   Feed all kinds of live and frozen foods. Best to feed small amounts several times a day. We generally feed squid, shrimp (the same kind people eat), mussels, and all kinds of chopped up fish. Be sure to wash these foods thoroughly before feeding. Live fish will also be taken but should not be fed exclusively.

Habitat: Natural geographic location:
   Polka-dot Boxfish, Yellow Boxfish, or Blue-spotted Boxfish are found in the Indo-Pacific: Red Sea and East Africa to the Hawaiian and Tuamoto islands, north to Ryukyu Islands, south to Lord Howe Island. The Red Sea population differs slightly in coloration and has been known as Ostracion argus; closely related to Ostracion immaculatus from southern Japan. Southeast Atlantic: south coast of South Africa. Inhabits lagoon and semi-sheltered seaward reefs. Juveniles often among Acropora corals. Solitary. Juveniles expatriating to subtropical zone from the pelagic larval stage. Small juveniles secretive in narrow crevices. Occurs near shore in rock bottoms.

Foods:
   In the wild this boxfish feeds primarily on algae with a compliment of microorganisms, invertebrates, mollusks, sponges , sand dwelling polychaetes, crustaceans, foraminiferans, and small fishes.

  In the aquarium you should feed all kinds of meaty foods and greenstuffs. A bottom feeder. Puffers are primarily predatory fish in the wild though they do graze on a bit of algae. This puffer will enjoy all kinds of meaty foods including shrimp, worms, clams, various mussels, snails, tunicates, and fish. They are not picky eaters and will quickly become adapted to a variety of prepared aquarium foods and an occasional algae wafer. Flake food is not recommended. Even though they may eat it, puffers will not thrive on it.

Social Behaviors:
   Apparently this fish is sometimes aggressive and sometimes not. Keep an eye on newcomers with an established boxfish and any new boxfish that are added to the aquarium.

Sex: Sexual differences:
   Apparently many boxfish are easy to sex but we haven't found this information yet.

Light: Recommended light levels:
   No special requirements.

Temperature:
   No special requirements. Normal temperatures for marine fish is between 74 and 79 degrees Fahrenheit.

Length/Diameter of fish:
   Polka-dot Boxfish, Yellow Boxfish, or Blue-spotted Boxfish adults can grow to 45.0 cm (18 inches).

Minimum Tank Length/Size:
   A minimum 100 gallon aquarium is recommended.

Water Movement: Weak, Moderate, Strong
   No special requirements.

Water Region: Top, Middle, Bottom
   No special requirements.

Availability:
   This fish is available from time to time.


Related Video:



Latest Comments
You guys may be amazed to find out that I keep my yellow boxfish in a 200 gallon tank with the following: dogface puffer, porcupine puffer, 2 clownfish, 1 tomato clown, 1 greenbird wrasse, 1 clown tang, 1 naso tang, 1 blue tang, 1 blue trigger, 1 emperor angel, & 1 Pinnatus batfish! All live peacefully & have found their territories within the tank. I guess it really shows that each tank/fish will be different. I've read so many articles against putting all my fish together but did so carefully & all is well. The boxfish in particular is fantastic & learns tricks very quickly. My batfish, contrary to so many articles is not timid at all & in fact eats quite a lot & interacts aggresively with the other fish.
jay
2007-06-14
This fish is a really cute guy. I have successfully kept this fish for a year so far. They are fun to look at and feed.
Derek Lam
2004-05-21
Some of the coolest comments:
These fish emit a toxic slim if stressed that can kill everything in the tank. I know, I watched it happen (beware).
Glenn
2008-03-29
I just got a yellow spotted boxfish the other day and added it to my tank. The tank is occupied with a long horned cowfish, porcupine puffer, dogface puffer, queen angel and blue spotted puffer. Once the boxfish entered the tank, the dogface immediately attacked it. This dogface has never attacked anything before, so I am doubting their compatibility. I quickly removed the dogface from the tank, and placd him on a frying pan. (just kidding) But I would be extra careful on what fish to keep with this one.
Dj Orion
2007-08-27
Comments Dr Jungle REALLY Likes to Hear!
Omg guys, this web site is so super. I love fishes, but i dont like touching them ...ewww. so I just look at them.
Micsizzle the shizzle
2005-04-13
I love your website. it is good cause i went somewhere in japan and i have a project on this fish, so it was very useful. i love the way boxfish swim backwards, it is so CUTE!i went to Kushimoto or Wakayama, have u been there? well i love this site and i would want to buy a boxfish! Bye
ddd
2004-10-13

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