Butis humeralis

Butis humeralis
Conservation status
	Not evaluated (IUCN 3.1)
Scientific classification
Class:	Actinopterygii
Order:	Perciformes
Family:	Eleotridae
Genus:	Butis
Species:	B. humeralis
Binomial name
	Butis humeralis; (Valenciennes, 1837)

Butis humeralis, commonly known as the dark sleeper or olive flathead-gudgeon, is a fish native to the waters of Indonesia and Indochina. Found in salt, brackish and fresh water, it reaches a standard length of 14.2 cm.^[1] It closely resembles the crazy fish (Butis butis), but is more solid in build and never has two black spots at the base of its pectoral fins.^[2]

References

^ Froese, Rainer; Pauly, Daniel (eds.). "Butis humeralis". FishBase. February 2015 version.
^ Yvonne Sadovy, Andrew S. Cornish (2000). Reef Fishes of Hong Kong. Hong Kong University Press. pp. 252–53. ISBN 9789622094802.

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[1] Froese, Rainer; Pauly, Daniel (eds.). "Butis humeralis". FishBase. February 2015 version.

[2] Yvonne Sadovy, Andrew S. Cornish (2000). Reef Fishes of Hong Kong. Hong Kong University Press. pp. 252–53. ISBN 9789622094802.

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