I'm sure they just make different types. But I don't see why they would use something called REPTIsafe fore fish. Otherwise reptile wouldn't be in the name. So I'm curious as to what your looking at. I am going to laugh if there really is a reptisafe for fish. Cause you think they wuld call it aquasafe or something like that that is related to fish. So that's where I'm lost in this whole thing.