Crazy fish

Crazy fish
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Gobiiformes
Family: Butidae
Genus: Butis
Species:
B. butis
Binomial name
Butis butis
(F. Hamilton, 1822)
Synonyms
  • Butis prismaticus (F. Hamilton, 1822)
  • Butis leucurus (F. Hamilton, 1822)
  • Cheilodipterus butis F. Hamilton, 1822
  • Eleotris butis (F. Hamilton, 1822)
  • Eleotris longicauda De Vis, 1910
  • Eleotris papa De Vis, 1910
  • Sparus chinensis Osbeck, 1765 (Nomen oblitum)

Butis butis, the crazy fish, duckbill sleeper, or upside-down sleeper, is a species of sleeper goby that are native to brackish and freshwater coastal habitats of the Indian Ocean and the western Pacific Ocean from the African coast to the islands of Fiji. They prefer well-vegetated waters and can frequently be found in mangrove swamps. They are small, drably-colored fish, reaching a maximum length of only 15 cm (5.9 in).[2] They are predatory and are known for their behavior of swimming vertically – or even upside down – while hunting.

  1. ^ Larson, H.; Sparks, J.S. (2020) [errata version of 2017 assessment]. "Butis butis". IUCN Red List of Threatened Species. 2017: e.T3381A174777708. doi:10.2305/IUCN.UK.2017-3.RLTS.T3381A174777708.en. Retrieved 17 November 2021.
  2. ^ Froese, Rainer; Pauly, Daniel (eds.). "Butis butis". FishBase. April 2013 version.