1) A fish that goes in a fish tank and eats all the mossy green crap from other fish you have in with the Sucker Fish. (It sucks the side of the fish tank and rocks and other accesories in the fish tank.)
2) An insult. Sometimes people say you look like a sucker fish
maybe because you have a big nose or a round, big mouth.
1) "I bought a Sucker Fish so i wont have to clean my fish tank as often".
2) "Oh my god, Juiley looks like a sucker fish"