Dory from Finding Nemo caught on Selenium. Dori is a Paracanthurus hepatus or blue tang. The blue tang is of minor commercial fisheries importance, however it is occasionally utilized as a bait fish. The flesh has a strong odor and is not highly prized. This fish may cause ciguatera poisoning if consumed by humans. However, blue tangs are collected commercially for the aquarium trade. An unwary human who tries to handle the blue tang risks the chances of being badly cut by the caudal spine. These spines, on both sides of the caudal peduncle, are extended from the body when the fish becomes excited. The quick, thrashing sideways motion of the tail can produce deep wounds that result in swelling and discoloration, posing a high risk of infection. The pain can last for hours, until eventually subsiding into a dull ache. It is believed that some species of Acanthurus have venom glands while others do not. The spines are used only as a method of protection against aggressors. Having one in an aquarium and cornering it will most likely result in injury - wikipedia
