So I have been researching trying to figure out what to do with my 30g . . .right now I all that's in it are a couple Climbing Perch* . . . lfs has a small rubber eel I was thinking of incorporating into it . . .I've read they are generally peaceful but can go after smaller bottom fish. The perch are a little bigger than the eel, but do hang out in the lower part of the tank a lot . . .haven't seen many people with experience with rubber eels though (and yes, I know they're really an amphibian), anyone have any info or advice?