Because they have spikes near the tail, which should be avoided if they are aquarium fish.
The surgeonfish (sometimes called surgeon fish) are members of the Acanthuridae family, which contains tangs, unicornfish, and doctorfish.The name "surgeonfish" is derived from the razor sharp spines (scalpels) at the base of their bodies, just in front of the tail fin. These are very sharp!
Ocean Surgeonfish was created in 1855.
Surgeonfish are tropical marine fishes of the family Acanthuridae of the classActinopterygii.
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Surgeonfish mainly feed on algae, seaweed, and other plant material. They are herbivores and play a crucial role in keeping coral reefs healthy by preventing algae overgrowth. Some surgeonfish will also feed on small invertebrates like plankton.
There does not seem to be a fish exclusively called "regal fish."There is the Regal Blue Tang (Paracanthurus hepatus), or blue surgeonfish, which is a bright blue and yellow. The name "blue tang" is also confusingly applied to the lighter blue Acanthurus coeruleus, or Atlantic surgeonfish.
100 day
Yes.
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They inhabit marine ecosystems.
There are two species, in two different genera, called "blue tang." The Atlantic blue tang is in the genus Acanthurus (species, Acanthurus coeruleus). The blue tang native to the Pacific and Indian Oceans is in the genus Paracanthurus (species Paracanthurus hepatus). This is the one that is more popular as a marine aquarium fish. It is also called the regal tang, blue surgeonfish, hippo tang, palette surgeonfish, or flagtail surgeonfish. Both of these blue tangs are in the family Acanthuridae, the surgeonfishes. For more information: http://en.wikipedia.org/wiki/Acanthuridae http://en.wikipedia.org/wiki/Acanthurus_coeruleus http://en.wikipedia.org/wiki/Paracanthurus_hepatus