Definition of upside-down catfish in English:

upside-down catfish

Line breaks: upside-down cat|fish


  • A small freshwater catfish that habitually swims upside down so as to browse on algae on the undersides of floating leaves. Native to central Congo, it is popular in aquaria.
    • Synodontis nigriventris, family Mochokidae
    More example sentences
    • This fish is seen far less often in the aquarium trade, but also appears under the name of upside-down catfish.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
(in science fiction) navigation in outer space