Batrochoglanis
Batrochoglanis | |
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Batrochoglanis vilosus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Siluriformes |
Family: | Pseudopimelodidae |
Genus: | Batrochoglanis Gill , 1858
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Type species | |
Pimelodus raninus Valenciennes 1840
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Batrochoglanis is a small genus of catfishes (order Siluriformes) of the family Pseudopimelodidae.
Species
There are currently five recognized species in this genus:[1]
- Batrochoglanis acanthochiroides (Güntert, 1942)
- Batrochoglanis melanurus Shibatta & Pavanelli, 2005
- Batrochoglanis raninus (Valenciennes, 1840)
- Batrochoglanis transmontanus (Regan, 1913)
- Batrochoglanis villosus (Eigenmann, 1912)
Distribution
Batrochoglanis species are known and distributed throughout the
Description
Species of this genus have rounded, wider than deep bodies; large heads, rounded in dorsal view;
Three color patterns of the caudal fin in Batrochoglanis species are known. The first pattern, in B. raninus, B. transmontanus and B. acanthochiroides, is a light caudal fin, with a dark band on the posterior third. The second pattern, in B. villosus, is a light caudal fin, with dark dots irregularly distributed. The third pattern, found in B. melanurus, has the caudal fin completely dark. The coloration pattern is useful for separating species, but apparently does not allow inferences about
B. acanthochiroides, the largest species, grows to 80.0 centimetres (31 in) TL.[3] B. melanurus has a maximum length of 13.7 cm (5.39 in) SL.[2] B. raninus reaches a length of 20.0 (7.87 in) SL.[4] B. transmontanus grows to a length of 25.0 cm (9.84 in) TL.[5] B. villosus reaches a length of 14.8 cm (5.83 in) TL.[6]
Ecology
B. transmontanus is recorded to live in rivers.[6] B. raninus commonly occurs in creeks as well as in rivers. It is found in very shady, deep zones of rivers where the current is slow, the bottom is shady, and the gravel is covered with plant debris. During the day, B. raninus lies hidden under branches or rocks. It hunts by stalking, swallowing prey within its range. When young, B. raninus feeds on micro-crustaceans and aquatic insect larvae, then shifts its diet to fishes of notable size.[4]
References
- ^ Froese, Rainer and Pauly, Daniel, eds. (2012). Species of Batrochoglanis in FishBase. February 2012 version.
- ^ .
- ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2007). "Batrochoglanis acanthochiroides" in FishBase. June 2007 version.
- ^ a b c Froese, Rainer; Pauly, Daniel (eds.) (2007). "Batrochoglanis raninus" in FishBase. June 2007 version.
- ^ a b c Froese, Rainer; Pauly, Daniel (eds.) (2007). "Batrochoglanis transmontanus" in FishBase. June 2007 version.
- ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2007). "Batrochoglanis villosus" in FishBase. June 2007 version.