If seeingFinding Doryis part of your weekend plans , you ’re not alone : Box berth analysts are augur that the new Pixar motion-picture show will likely open between$115 and $ 120 million . While you ’re sitting around waiting for the movie commencement , here ’s a minuscule number of noesis you could shake off about Dory ’s specie , the Pacific Blue Tang .

1. IT HAS A LOT OF ALIASES.

Though the fish ’s scientific name isparacanthurus hepatus , it’salso known asPacific blue tang , majestic low tang , hippo tang , regal tang and palette surgeonfish , among other thing .

2. THEY HELP KEEP CORAL REEFS HEALTHY.

Blue tangs eat up nothing but alga , and they’reinstrumentalin keeping the alga levels on coral down to a accomplishable level . Without the blue tang there to eat their fill , algae could overgrow and suffocate the reefs .

3. DON’T EAT DORY.

TheParacanthurus hepatushaspoisonousflesh . Eating it may cause ciguatera , a foodborne illness pass on by sure reef fish that have toxins in its frame . If you happened to accidentally ingest one , it probably would n’t kill you — but you’dlikelycome down with a bad font of looseness .

4. IT’S NOT ALWAYS BLUE.

Despite its name , the low tang is not always sky-blue . It can change colour at nightbecauseof the manner visible light is reflect from the pigments in its skin , becoming “ off-white with a shadiness of violet . ” researcher believe its nervous organization is less active at night , which may also affect its food colour . And juvenile blue tangs arebright yellow , which darken as they maturate .

5. IT CAN CUT YOU.

She may seem sweet in the motion picture , but the real - life story rowboat can ( and will ) issue you . The aristocratical tang has a sharp spine that can stand erect as a means of self - defense . Because of this sharp , scalpel - looking backbone , the blue tang is part of a family of fish known as “ surgeonfish . ”

Tewy, Wikimedia Commons // CC BY 2.5