Description of a new Clarias species from Southeast Asia based on morphological and genetical evidence (Siluriformes, Clariidae)

Teugels G.G., Sudarto , Pouyaud L.

Date de parution: février 2001
Volume: 25
Number: 1
Pagination: 081-092
Editeur: Société Française d’Ichtyologie
doi: https://doi.org/10.26028/cybium/2001-251-007
Résumé

Clarias intermedius n. sp. is described from Central Kalimantan (Indonesia). The new species belongs to the group of Asian Clarias species recognised by a very short distance between the occipital process and the dorsal fin origin and including C. macrocephalus and C. meladerma. From the former, it is distinguished amongst others by fewer gill rakers on the first branchial arch (16-23 vs. 27-33); from the latter is it easily recognised by the more numerous serrae on the anterior side of the pectoral spine (26-46 vs. 14-22). Clarias meladerma and the new species are sympatric in Central Kalimantan. In this area, the existence of diagnostic enzymatic loci and the absence of intermediate genotypes between both species demonstrated their reproductive isolation.

Mots-clés: Clarias intermedius - Clariidae - Indonesia - New species - Taxonomy
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