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Mastacembelus

Genus of fishes From Wikipedia, the free encyclopedia

Mastacembelus is a genus of many species of spiny eel fish from the family Mastacembelidae. They are native to Africa (c. 45 species) and Asia (c. 15 species).[4] Most are found in rivers and associated systems (even in rapids[5]), but there are also species in other freshwater habitats and a particularly rich radiation is found in the Lake Tanganyika basin with 15 species (14 endemic).[6][7] A few species can even occur in brackish water.[8]

Phylum:Chordata
Class:Actinopterygii
Division:Teleostei
Order:Synbranchiformes
Quick facts Scientific classification, Type species ...
Mastacembelus
Mastacembelus moorii
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Teleostei
Order: Synbranchiformes
Family: Mastacembelidae
Genus: Mastacembelus
Scopoli, 1777
Type species
Ophidium mastacembelus
J. Banks & Solander, 1794[1]
Species

See text

Synonyms
  • Caecomastacembelus[2]
  • Aethiomastacembelus[2]
  • Afromastacembelus[3]
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Appearance

Several Mastacembelus armatus caught in the Tlawng river in India. This species is sometimes kept in aquariums, but also considered a good food fish and eaten in its native range[8]

The size and pattern varies greatly depending on the exact species of Mastacembelus. The smallest are M. latens and M. simba, which only reach a maximum total length of 7–8 cm (2.8–3.1 in).[4][5] At up to 1 m (3.3 ft), the largest of both the family and this genus is M. erythrotaenia.[4][9] M. erythrotaenia, often known as the fire eel, is blackish with an orange-red pattern, and it is a popular aquarium fish.[9] Otherwise species in this genus are typically brownish and often have a spotted, speckled or mottled pattern, either in another brown hue, grayish or yellowish. This pattern is reflected in the common name of another species sometimes kept in aquariums, the zig-zag eel M. armatus (alternatively called the tire track eel, a name otherwise used for M. favus). A few others also occasionally appear in the aquarium trade,[9] and some are considered good food fish and eaten locally.[8] M aviceps, M. brichardi, M. crassus and M. latens are found in dark, deep parts of the Congo River and sometimes shallower among rocks. These four species have reduced eyes and are all pinkish-white in color (non-pigmented), similar to cavefish.[5]

Taxonomy

In an evaluation of the Mastacembelidae in 2005, the genera Caecomastacembelus and Aethiomastacembelus (formerly used for the African species) were placed in synonymy with Mastacembelus.[2]

Species

Mastacembelus armatus is a widespread Asian species found in both fresh and brackish water, but as currently defined it is likely a species complex[8]
Mastacembelus erythrotaenia is a relatively large, brightly marked Asian species that is highly prized in the aquarium trade.[10]
Mastacembelus ellipsifer, one of the many species found only in Lake Tanganyika[6][7]
Mastacembelus flavidus, another species found only in Lake Tanganyika[6][7]

According to FishBase, there are currently 63 recognized species in this genus.[4] Five additional species (marked with a star* in the list) are recognized by Catalog of Fishes.[11]

References

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