''Channa micropeltes'', giant snakehead, giant mudfish or toman harimau, is among the largest species in the family
Channidae
The snakeheads are members of the freshwater perciform fish family Channidae, native to parts of Africa and Asia. These elongated, predatory fish are distinguished by their long dorsal fins, large mouths, and shiny teeth. They breathe air with ...
, capable of growing to in length and a weight of .
It is native to the fresh waters of
Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...
(South Indian populations are now regarded as a separate species, ''
C. diplogramma''),
[Benziger A, Philip S, Raghavan R, Anvar Ali PH, Sukumaran M, et al. (2011). ''Unraveling a 146 Years Old Taxonomic Puzzle: Validation of Malabar Snakehead, Species-Status and Its Relevance for Channid Systematics and Evolution.'' PLoS ONE 6(6): e21272] but has also been introduced elsewhere and is considered invasive
Invasive may refer to:
*Invasive (medical) procedure
*Invasive species
*Invasive observation, especially in reference to surveillance
*Invasively progressive spread of disease from one organ in the body to another, especially in reference to cancer ...
in Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
. Other names include ''xal mas'' (শাল মাছ) in Assamese, red snakehead, redline snakehead, and ''ikan toman'' (where ''ikan'' is fish in Malay
Malay may refer to:
Languages
* Malay language or Bahasa Melayu, a major Austronesian language spoken in Indonesia, Malaysia, Brunei and Singapore
** History of the Malay language, the Malay language from the 4th to the 14th century
** Indonesi ...
and Indonesian
Indonesian is anything of, from, or related to Indonesia, an archipelagic country in Southeast Asia. It may refer to:
* Indonesians, citizens of Indonesia
** Native Indonesians, diverse groups of local inhabitants of the archipelago
** Indonesian ...
).
Biology
The young of the ''C.micropeltes'' are red in color, with orange and black lateral stripes appearing after about two months. As the giant snakehead matures, it loses its stripes and redness, and instead develops a bluish-black and white pattern on its upper body. Juveniles sold in the aquarium fish trade are commonly called "red snakeheads". They can get up to long and a weigh .[
The species has the ability to crawl onto land and breathe air, although they are only able to do this in muddy or swampy areas, hence the nickname "mudfish".
Its ability to breathe air using a primitive lung located just behind the gills allows it to survive in stagnant water where oxygen levels are low, by coming to the surface and taking a small gulp of air. It also enables the snakehead to travel short distances on land, although it is unable to hunt while on land, as it cannot support itself at all with its small fins in comparison to its large body.]
Distribution
''C. micropeltes'' is found in Southeast Asia, Malay Peninsula
The Malay Peninsula (Malay: ''Semenanjung Tanah Melayu'') is a peninsula in Mainland Southeast Asia. The landmass runs approximately north–south, and at its terminus, it is the southernmost point of the Asian continental mainland. The area ...
, and Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...
.[ It used to be believed to have an oddly disjunctive distribution, inhabiting both Southeast Asia and southwest India, about apart. The Indian population was speculated to be from an early human introduction, prior to the 19th century. In 2011, the Southeast Asian and Indian populations were found to be separate species, with the latter correctly named '' C. diplogramma'' (leaving ''C. micropeltes'' for the Southeast Asian population).][
This fish is reported to be highly suitable for culture in cages or ponds in combination with ]tilapia
Tilapia ( ) is the common name for nearly a hundred species of cichlid fish from the coelotilapine, coptodonine, heterotilapine, oreochromine, pelmatolapiine, and tilapiine tribes (formerly all were "Tilapiini"), with the economically most ...
. It is found to be an effective tool in controlling the overpopulation of tilapia, which checks the stunted growth of tilapia.
As an invasive species
As the result of human introductions, ''C. micropeltes'' has been reported in six US states: Maine
Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and north ...
, , Tennessee
Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...
, Wisconsin
Wisconsin () is a state in the upper Midwestern United States. Wisconsin is the 25th-largest state by total area and the 20th-most populous. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake M ...
, Maryland
Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...
and Rhode Island
Rhode Island (, like ''road'') is a U.S. state, state in the New England region of the Northeastern United States. It is the List of U.S. states by area, smallest U.S. state by area and the List of states and territories of the United States ...
. It is not believed to be established in the U.S., however, unlike the northern snakehead
The northern snakehead (''Channa argus'') is a species of snakehead fish native to China, Russia, North Korea, and South Korea, ranging from the Amur River to Hainan. It has been introduced to other regions, where it is considered invasive. In ...
(''C. argus''), its temperate
In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...
relative.
In Maryland, three specimens were caught in the early 2000s, two in open waters and one in the shallows of the Inner Harbor
The Inner Harbor is a historic seaport, tourist attraction, and landmark of the city of Baltimore, Maryland. It was described by the Urban Land Institute in 2009 as "the model for post-industrial waterfront redevelopment around the world". The ...
in Baltimore. In 2003, an example was caught in Rock River, Wisconsin. Biologists were concerned that warm water effluents
Effluent is wastewater from sewers or industrial outfalls that flows directly into surface waters either untreated or after being treated at a facility. The term has slightly different meanings in certain contexts, and may contain various polluta ...
could allow the tropical species to survive in colder climates, but as yet there is no evidence of established populations anywhere in the United States, with all catches believed to be aquarium releases.
In 2010, one was found dead on the shores of the Saint-Charles River, in Quebec City
Quebec City ( or ; french: Ville de Québec), officially Québec (), is the capital city of the Provinces and territories of Canada, Canadian province of Quebec. As of July 2021, the city had a population of 549,459, and the Communauté métrop ...
, Canada. It was obviously an aquarium release.
The species is well-established throughout Taiwan and is considered invasive at least in Sun Moon Lake
Sun Moon Lake (; Thao: ''Zintun'') is a lake in Yuchi Township, Nantou County, Taiwan. It is the largest body of water in Taiwan. The area around the lake is home to the Thao tribe, one of aboriginal tribes of Taiwan. Sun Moon Lake surround ...
.
Hoax
In 2005, a specimen of ''C. micropeltes'' was reportedly caught by an angler while fishing for pike
Pike, Pikes or The Pike may refer to:
Fish
* Blue pike or blue walleye, an extinct color morph of the yellow walleye ''Sander vitreus''
* Ctenoluciidae, the "pike characins", some species of which are commonly known as pikes
* ''Esox'', genus of ...
on the River Witham
The River Witham is a river almost entirely in the county of Lincolnshire in the east of England. It rises south of Grantham close to South Witham at , passes through the centre of Grantham (where it may be closely followed using the Riversid ...
in Lincolnshire
Lincolnshire (abbreviated Lincs.) is a county in the East Midlands of England, with a long coastline on the North Sea to the east. It borders Norfolk to the south-east, Cambridgeshire to the south, Rutland to the south-west, Leicestershire ...
, England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...
. The claim of this catch is highly peculiar, as it was reportedly caught in late winter, and being a tropical species, it would not have been able to survive, let alone feed in an English river during winter. It was later determined to be a hoax; the fish had actually been found dead in a street.[
]
Use as food
In Malaysia
Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...
and Singapore
Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borde ...
, they are known locally as the ''toman'', while in Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...
they are called ''gabus'' or ''haruan'' (not to be confused with another species of smaller snakehead known as the common snakehead
''Channa striata'', the striped snakehead, is a species of snakehead fish. It is also known as the common snakehead, chevron snakehead, or snakehead murrel and generally referred simply as mudfish. It is native to South and Southeast Asia, and h ...
also called ''haruan''), and are cultured in fish ponds and reservoirs as game fish because they put up a strong fight when hooked. The giant snakehead is also a good fish to eat, and is often served in Chinese restaurant
A Chinese restaurant is an establishment that serves a Chinese cuisine. Most of them are in the Cantonese cuisine, Cantonese style, due to the history of the Overseas Chinese, Chinese diaspora and adapted to local taste preferences, as in t ...
s.
In Thailand
Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bo ...
, this fish is prepared in a variety of ways, especially grilled, being a common food item offered by street vendors.
In traditional Chinese medicine
Traditional Chinese medicine (TCM) is an alternative medical practice drawn from traditional medicine in China. It has been described as "fraught with pseudoscience", with the majority of its treatments having no logical mechanism of action ...
theory, eating this fish is believed to help in healing of the body, for example, after surgery or severe cuts and scrapes.
In the aquarium
''C. micropeltes'', frequently referred to as the red or redline snakehead in the fishkeeping
Fishkeeping is a popular hobby, practiced by aquarists, concerned with keeping fish in a home aquarium or garden pond. There is also a piscicultural fishkeeping industry, serving as a branch of agriculture.
Origins of fishkeeping
Fish have ...
hobby, is a popular fish to be sold in the pet trade. They are commonly sold as juveniles as pets. Some are even sold as feeders to be fed to larger carnivorous fish. They are voracious predators that will chase and eat anything that fits in their mouths. Due to this, they are called "freshwater great whites". They can successfully be housed, though, with silver arowanas, clown knifefishes, oscars, and other fish from same size group.
References
Further reading
* Ebanasar J. and V.Jayaprakas 1995b. Culture of three species of murrels with mossambique tilapia at three predator-prey densities in earthen ponds. J. Aqua . Trop. 10: 221-229.
* Ebanasar J. and V.Jayaprakas 1996. Food utilization of Channa micropeltes (Channidae: Pisces) fed three diets of animal origin. Indian J. Exp. Biol. 34:1261–1264.
* Ebanasar J. and V. Jayaprakas 2000 Influence of predator size on satiation and gastric evacuation of a predatory fish Channa micropeltes. Indian Journal of Comparative animal Physiology 18 : 44-55
* Ebanasar, J., B.D.Sheeja and R.Narayanan 2001. Nutritive value and Bio-chemical composition of selected freshwater fishes. Journal of Social Medicine 55-57.
* Ebanasar. J and V. Jayaprakas (2003) Growth and food utilization of Juvenile giant murrel Channa marulius and striped murrel Channa striatus fed with diets of animal origin. Symposium on physiological approaches to conserve biodiversity and to tackle environmental health hazards. Indian Society for comparative animal physiology. Tirupati.
* Jayaprakas. V and J.Ebanasar (2003) Enzymes activity in the alimentary canal of malabar snake head Channa micropeltes fed with different diets. Symposium on physiological approaches to conserve biodiversity and to tackle environmental health hazards. Indian Society for comparative animal physiology. Tirupati.
External links
snakeheads.org
Report of giant snakehead captured in Wisconsin
Photos of Snakehead Fish
Fishing in Belum-Temenggor, Malaysia
{{Taxonbar, from=Q628790
micropeltes
Fauna of Southeast Asia
Fish of Thailand
Fish described in 1831
Taxa named by Georges Cuvier