SUITABLE MARINE PREDATOR FISH ?

[Googz]

He wants a fish. Let him get a fish. An eel is a fish.

Snowflakes get to large for that size tank for life, in addition they produce a large amount of waste. However with good skimming he will be able to keep it in there for some time. This goes for most predators.

 

[puffcrusader696]

canthigaster valentini, black saddled toby (same fish) mine is a beast but in some cases they are very docile (like mine)

 

[BIGgourami]

He wants a fish. Let him get a fish. An eel is a fish.

why not tell him to keep a Pima then?

Not every fish works in every tank

"I have a one gallon tank, can I keep a volitan lion"
Hyperbole of course but still...