Dory is a Blue Tang fish.See Related Links below for a real blue tang fish.
Adult Blue Tang are omnivores. They feed on plankton, algae and shrimp.
Paracanthurus hepatus (Pacific blue tang)
The blue tang, either Pacific (Regal), Atlantic, or Powder, do help the environment by consuming algae.
Pacific Regal Blue Tang (Paracanthurus hepatus)
Pacific, Atlantic & the Caribbean.
Pacific Regal Blue Tang
Paracanthurus hepatus (Pacific blue tang)
Paracanthurus hepatus (Pacific blue tang)
Pacific regal blue tang (Paracanthurus hepatus)
The forgetful companion is actually companion to Nemo's father, Marlin, while he is searching for Nemo. Marlin meets up with a fish named DORY who has problems with short-term memory. Dory is a Paracanthurus hepatus which is a species of Indo-Pacific surgeonfish. A number of common names are attributed to the species, including regal tang, palette surgeonfish, blue tang (leading to confusion with the Atlantic Acanthurus coeruleus), royal blue tang, hippo tang, flagtail surgeonfish, pacific regal blue tang and blue surgeonfish.
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