Channa gachua

Dwarf snakehead
After Munro, 1955[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Perciformes
Family:	Channidae
Genus:	Channa
Species:	C. gachua
Binomial name
Channa gachua (Hamilton, 1822)

Channa gachua is a species of snakehead. It is a species of dwarf snakehead and has a length of 20 centimetres (8 in). It gave its name to the aquarists' term dwarf snakeheads to denote the smaller Channa species

• Channa bleheri
• Channa burmanica
• Channa harcourtbutleri
• Channa orientalis
• Channa stewartii

Distribution of Channa gachua. Source: USGS 2004^[1]

It can be found in Asian countries from Pakistan to Indonesia. Modern ichthyology considers this fish to be a species complex, i.e. that it consists of several closely related species. Because of its pretty coloration and small size, it is an attractive fish and is commonly kept in aquaria. It is a mouthbrooder and eats a wide range of foods including insects, small fish but no animals like frogs. It is a hardy fish that can tolerate large changes in temperature and acidity.

Channa gachua is often confused with Channa orientalis an endemic species from Sri Lanka. In Indian ichthyology, Channa gachua is considered to be a junior synomym of Channa orientalis, because it was described by Markus Elieser Bloch 20 years before Hamilton described Channa gachua. The major morphological difference between the two species is that Channa gachua has ventral fins and Channa orientalis does not. Besides that there are many differences in their breeding behavior, like the number of offspring and others.

Channa gachua can also hardly be distinguished from another closely related Channa species called Channa harcourtbutleri inhabiting Lake Inlé in Myanmar.

References

• "Channa gachua". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=166678. Retrieved 18 April 2006. 
• Froese, Rainer, and Daniel Pauly, eds. (2005). "Channa gachua" in FishBase. November 2005 version.
• snakeheads.org

1. ^ ^{a b} Courtenay, Jr., Walter R. and James D. Williams. Chiana Gachua USGS Circular 1251: Snakeheads (Pisces, Chinnidae) - A Biological Synopsis and Risk Assessment. U.S. Department of the Interior, U.S. Geological Survey. 2004-04-01. Retrieved 2007-07-15.

External links

• Ng, H.H.; Ng, Peter K.L.; Britz, Ralf 1999: Channa harcourtbutleri (Annandale, 1918): a valid species of snakehead (Perciformes: Channidae) from Myanmar.Journal of South Asian Natural History. Vol.4: 57-63.