ter
there is a horn fish
The same as the usual English pronunciation.
cod
The Sole. Fish in the family Soleidae.
yes, but the "Easter Rising" is the usual name
The same as fish. (a school)
It's also where fish live.
The Cobbler Fish is also known as the Basa Fish - Latin name Pangasius bocourti - is a type of catfish in the family Pangasiidae. However, Basa Fish and Catfishes (order Siluriformes) are not the same fish. Simple in the same family.
Tuna
if your fish is going around the tank with its eyes cosed multiple times.
The same way everything else got its name. It evolved as the language evolved over many centuries. In languages other than English it it not called fish. In France "fish" is "poisson"
To answer your question quickly yea. The humuhumunukunukuapua'a is a specific fish in the trigger fish species. With that long of a name I am guessing that the fish was found around Hawaii, and there is probably a more common name for the fish.