{{Short description|Species of fish}} {{Speciesbox | fossil_range = Lower Pliocene - Present | image = Heterobranchus_longifilis.jpg | status = LC | status_system = IUCN3.1 | status_ref = <ref name="iucn status 20 November 2021">{{cite iucn |author=Lalèyè, P. |author2=Tweddle, D. |author3=Azeroual, A. |author4=Getahun, A. |author5=Hanssens, M. |author6=Kazembe, J. |author7=Marshall, B. |author8=Moelants, T. |date=2019 |title=''Heterobranchus longifilis'' |volume=2019 |article-number=e.T182390A84243750 |doi=10.2305/IUCN.UK.2019-3.RLTS.T182390A84243750.en |access-date=20 November 2021}}</ref> | taxon = Heterobranchus longifilis | authority = Valenciennes, 1840<ref name="fishbase"/> }}
The '''vundu''' ('''''Heterobranchus longifilis''''') is a species of large airbreathing catfish found widely in rivers and other freshwater habitats of sub-Saharan Africa, as well as the Nile.<ref name="iucn status 20 November 2021" /> It is also called the '''sampa''', '''cur''', '''lenda''', or '''certa'''.<ref name="second">{{cite web|url=http://animal.discovery.com/fish/river-monsters/vundu-catfish/|title=Animal.discovery.com|access-date=5 May 2010|archive-url=https://web.archive.org/web/20100507012808/http://animal.discovery.com/fish/river-monsters/vundu-catfish/|archive-date=7 May 2010|df=dmy-all}}</ref>
==Description== The vundu is the largest true freshwater fish in southern Africa, reaching up to {{convert|1.5|m|ft|abbr=on|0}} in length and {{convert|55|kg|lb|abbr=on}} in weight.<ref name="fishbase">{{FishBase | genus = Heterobranchus | species= longifilis | month = May| year = 2010}}</ref> (Bull sharks are also found in southern Africa and reach a larger size, but occur in both fresh and saltwater.) Few other catfish have such large second dorsal fins (adipose fins) or such long barbels as do the vundu. Its barbels nearly reach to the origin of the pelvic fin. The colour of ''Heterobranchus longifilis'' is light to dark olive brown on its dorsal surface, getting lighter over the mid-body to a light brown. Its belly is off-white. Fins are usually light brown.<ref name="catfish1">{{cite web|url=http://www.catfish1.com/forums/showthread.php?9116-The-Vundu-Catfish-of-Lake-Kariba-Zambezi |title=Catfish1.com|access-date=5 May 2010}}</ref>{{unreliable source?|date=October 2015}}
In aquaculture, it is sometimes hybridized with another very large species, the African sharptooth catfish (''Clarias gariepinus''), resulting in offspring known as "Hetero-clarias".<ref>{{cite web|author=Roosendaal, B.J.|title=African catfish (Clarias gariepinus)|url=http://www.africancatfish.com|publisher=Fleuren & Nooijen|access-date=17 March 2017}}</ref>
==Habitat and range == The vundu is found widely in rivers and other freshwater habitats of sub-Saharan Africa, only extending beyond this region in the Nile (although it is rare in the lower sections of this river). Among others, it is found in the Benue River, Volta River, Niger River, Gambia River, Senegal River, Lake Chad, Omo River, Congo River Basin, Lake Rukwa, Lake Kariba, Zambezi River, Lake Tanganyika and Lake Edward.<ref name="iucn status 20 November 2021" />
The vundu is generally uncommon, but it is not considered threatened despite having declined locally.<ref name="iucn status 20 November 2021" /> Most active at night, it feeds on any available food, including invertebrates and insects when small, then fish and other small vertebrates when large. It scavenges off large carcasses and offal from riverside villages. It can live for 12 or more years.<ref name="fishbase"/> The vundu can survive out of water for extensive periods of time.<ref name="catfish1"/>
Due to impaired vision, they rely on vibrations and smells in search of food. They love to remain in deep water for eating any available food they need.<ref>{{Cite web |last=Shorowarthy |first=Shahab Uddin |date=2022-07-25 |title=Vundu Catfish: A Monster of The African River |url=https://nehrin.com/vundu-catfish/ |access-date=2023-08-23 |website=nehrin.com |language=en-US}}</ref>
The vundu eating habits affect many aspects of their lives; their growth, feeding efficiency, and body mineral composition. If they are raised in captivity and fed a soy based or cotton based meal their growth will reduce significantly. Changing the vundu's diets partially is okay, but changing them completely is detrimental to an extent because of the lack of protein they receive in a given meal.<ref>{{Cite journal |last1=IMOROU TOKO |first1=I. |last2=FIOGBE |first2=E.D. |last3=KESTEMONT |first3=P. |date=June 2008 |title=Growth, feed efficiency and body mineral composition of juvenile vundu catfish (Heterobranchus longifilis, Valenciennes 1840) in relation to various dietary levels of soybean or cottonseed meals |url=https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-2095.2007.00518.x |journal=Aquaculture Nutrition |volume=14 |issue=3 |pages=193–203 |doi=10.1111/j.1365-2095.2007.00518.x |bibcode=2008AqNut..14..193I |issn=1353-5773|url-access=subscription }}</ref>
==References== {{Reflist}}
==Further reading== * Toko, Imorou (1 2); Fiogbe, Emile D., Koukpode, Bruno, Kestemont, Patrick (2007). Rearing of African catfish (Clarias gariepinus) and vundu catfish (Heterobranchus longifilis) in traditional fish ponds (whedos) : Effect of stocking density on growth, production and body composition. {{ISSN|0044-8486}}. CODEN AQCLAL. 2007, vol. 262, no. 1, pp. 65–72. * [http://www.lrrd.org/lrrd22/2/atag22030.htm Vundu in aquaculture]
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Category:Freshwater fish of Africa Category:Fish described in 1840 Category:Taxa named by Achille Valenciennes