sucking fish is a noun meaning "marine fishes with a flattened elongated body and a sucking disk on the head for attaching to large fish or moving objects". It carries one recorded sense.
marine fishes with a flattened elongated body and a sucking disk on the head for attaching to large fish or moving objects
Definitions, synonyms and semantic relations for sucking fish come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.