Heterobranchus
bidorsalis Geoffroy Saint-Hilaire, 1809
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| Image
contributors to this species: |
| Karl-Heinz
Dau
(1 Stamp) |
| ScotCat
Sources: |
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| Other
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| Relevant
Information: |
Aquarium Care:
Grows too large for aquarium keeping and is a predator. Characteristics:
Dorsal spines (total): 0; Dorsal soft rays (total): 40 - 46; Anal
soft rays: 49 - 58; Vertebrae: 62 - 63. Head oval-shaped to rectangular
dorsally; snout broadly rounded; eyes rather laterally placed.
Frontal fontanelle long and narrow; occipital fontanelle relatively
long and oval shaped. `Postorbital' bones completely united. Suprabranchial
organ well developed. Pectoral spine smooth. Openings of secondary
sensory canals with regular geometric pattern. Body and fins occasionally
with irregularly placed spots. Remarks: Teugels
et al. (1990) diagnosed this genus on the presence of a large
adipose fin supported by 21-27 extended neural spines. The external
morphology of Heterobranchus species is similar to that
of Clarias and Dinotopteroides species. The
most important difference is the presence of a large adipose fin.
Eleven nominal species have been described in this genus and Teugels
et al. (1990) recognised four of them as valid: Heterobranchus
bidorsalis
Geoffrey Saint-Hilaire, 1809 (type species), H.longifilis
Valenciennes, 1840, H.isopterus
Bleeker, 1863 and H.boulengeri Pellegrin, 1922.
The genus is endemic to Africa. Its monophyletic nature was recently
confirmed by genetic evidence (Agnèse and Teugels, 2001).
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| Common
Name: |
None |
| Synonyms: |
Heterobranchus geoffroyi,
Heterobranchus senegalensis, Heterobranchus intermedius |
| Family: |
Clariidae
blycipitidae |
| Distribution: |
Africa:
Nile. Africa: Chad basin, Niger, Upper Volta, Guinea and Senegal.
Also known from the Gambia River |
| Size:
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140cm.
(4ft 8ins) |
| Temp: |
22-28°C
(71-83°F) |
| p.H. |
6.0-7.5. |
| Reference: |
Baensch, H.A.
and R. Riehl 1995 Aquarien Atlas. Band 4. Mergus Verlag
GmbH, Verlag für Natur- und Heimtierkunde, Melle, Germany.
864 p.
Froese, R. and D. Pauly. Editors. 2009.FishBase.
World Wide Web electronic publication. www.fishbase.org, version
(11/2009).
Teugels, G.G. and Agnèse, D. 2003 Taxonomy
and Phylogeny of Clariidae - an overview. Flemish FWO project
G.0388.00 on catfish. In Catfishes (2003) Eds. G.Arratia, B.G.
Kapoor, M.Chardon & R.Diogo - 2 vols, pp 487. |
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Family:
Clariidae
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on thumbnails |
 Heterobranchus
bidorsalis
Stamp
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