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Clown Featherback Clown featherback The clown featherback, clown knifefish, or spotted knifefish, Chitala ornata, is a nocturnal tropical fish with a long, knife-like body. Clown featherback This knifefish is native to freshwater habitats in Cambodia, Laos, Thailand and Vietnam,[2] but it has also been introduced to regions outside its native range.[1] It is one of world's most invasive species. It is often seen in aquaculture and the aquarium trade where frequently confused with Chitala chitala; the latter species is very rare in the aquarium trade.[3][4] Despite its popularity, the clown featherback reaches 1 m (3.3 ft) in length,[2] outgrowing all but the largest aquaria.[3] Sub-adult specimen Conservation status Contents Distribution Least Concern (IUCN 3.1)[1] Appearance Scientific classification Behavior Kingdom: Animalia In the aquarium Feeding Phylum: Chordata As food Class: Actinopterygii See also Order: Osteoglossiformes References Family: Notopteridae External links Genus: Chitala Species: C. ornata Distribution Binomial name This species is native to Cambodia, Laos, Thailand and Vietnam, Chitala ornata where found in the Mekong, Chao Phraya and Meklong river basins.[2] J. E. Gray, 1831 It has also been introduced to regions outside its native range, including the Philippines, Indonesia, Myanmar, Singapore, Sri Lanka, and Palm Beach County, Florida, United States.[1][3] It has either spread to or was introduced to Broward County, Florida.[5] Another introduced population exists in Sarasota County, Florida. Appearance The clown knifefish is very distinct, with normally silvery gray with a long knife-like body (laterally compressed) and a long anal fin that gives these fish their common name. Mature fish normally have five to ten (or even more) black spots ringed with white that usually decrease in size as the fish grows. These ocellated spots and the lack of faint stripes on the back separate it from Chitala chitala; a species it frequently has been confused with.[3][6] Albinos and leucistic specimens are seen with some frequency in the aquarium trade.[3] Juveniles lack the spots, but are overall striped. Their long anal fins are used to make graceful forward and backward movements. The clown knifefish grows to a fairly large size, up to 1 m (3.3 ft) and 5 kg (11 lb) in the wild.[2] It has two nasal tentacles above its large, toothed mouth. In the center of the body is a flaglike dorsal fin and has no ventral fins. Aquarium specimen showing the small ocellated spots on the lower Behavior rear body (towards the "tail") that are typical of adults They are nocturnal and usually cruise during the twilight hours. They normally hunt live prey and will try any fish that fits into their mouths. Young clown knifefish usually school near water logs and plants for security, whereas more mature specimens usually become territorial and eventually become loners. These fish can also breathe air to survive in stagnant waters and little oxygen. The clown knifefish prefers water around neutral pH and temperature ranging from 75 to 85 °F (24 to 29 °C). These fish usually are found in lakes, swamps, and river backwaters. In the aquarium Clown knifefish are sold as exotic fishes in pet stores, but they grow much too large for the average home aquarium. These fish have periods of retreat, so aquaria which have caves, plants, or other hiding places are preferred. They are jumpers, so the lid should be kept tightly closed. Dim lighting may help lessen jumping. For the first few days, clown knifefish are shy and prone to hiding. As they grow larger they tend to be quite the opposite. Feeding Clown knifefish are hearty eaters, and will take live foods such as feeder fish, ghost shrimp, and blackworms. With time, they can be adapted to foods such as beefheart and will sometimes learn to accept commercial food pellets. They are mostly nocturnal, thus prefer feeding when the lights are off. As food The clown featherback is commonly seen in the cuisine of Thailand and other southeast Asian countries. In Thailand when deep-fried as Pla krai thot krathiam (ปลากรายทอดกระเทียม) it is served with a spicy dipping sauce on the side made by mashing up coriander roots, bird's eye chillies and garlic, and mixing this with fish sauce, lime juice and sugar. The clown featherback is also the main fish used in the production of fish balls. Adult in the market in Chiang Rai, Thailand. Deep-fried pla krai with garlic. Small cottage industry making Chitala ornata naem. See also Bronze featherback List of freshwater aquarium fish species List of Thai ingredients References 1. Vidthayanon, C. (2012). "Chitala ornata" (http://www.iucnredlist.org/details/181056/0). The IUCN Red List of Threatened Species. IUCN. 2012: e.T181056A1693604. doi:10.2305/IUCN.UK.2012- 1.RLTS.T181056A1693604.en (https://doi.org/10.2305%2FIUCN.UK.2012-1.RLTS.T181056A169 3604.en). Retrieved 13 January 2018. 2. Froese, Rainer and Pauly, Daniel, eds. (2014). "Chitala ornata" (http://www.fishbase.org/summary/ SpeciesSummary.php?genusname=Chitala&speciesname=ornata) in FishBase. May 2014 version. 3. Seriously Fish: Chitala ornata. (http://www.seriouslyfish.com/species/chitala-ornata/) Retrieved 24 May 2014 4. Seriously Fish: Chitala chitala. (http://www.seriouslyfish.com/species/chitala-chitala/) Retrieved 24 May 2014 5. "clown knifefish" (https://www.eddmaps.org/distribution/point.cfm?id=4499887). EDDMapS. University of Georgia - Center for Invasive Species and Ecosystem Health. Retrieved 5 August 2020. 6. Roberts, T.R. (1992). Systematic revision of the old world freshwater fish family Notopteridae. Ichthyol. Explor. Freshwat. 2(4):361-383. http://www.myfwc.com/WILDLIFEHABITATS/Nonnative_FW_ClownKnifefish.htm – accessed October 2006 http://badmanstropicalfish.com/profiles/profile5.html - accessed October 2006 http://www.aqualandpetsplus.com/Knife,%20Clown.htm External links Media related to Chitala ornata at Wikimedia Commons Retrieved from "https://en.wikipedia.org/w/index.php?title=Clown_featherback&oldid=971252627" This page was last edited on 5 August 2020, at 00:38 (UTC). Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization..
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