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Cybium,
Revue
Internationale dIchtyologie |
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Description of two new Clarias species from Borneo (Siluriformes, Clariidae) SUDARTO (1), Guy G. TEUGELS (2) & Laurent POUYAUD (3, 4) (1) Research
Institute of Freshwater Fisheries, Instalasi Penelitian Perikanan Air
Tawar, Jalan Ragunan Pasar Minggu, P.O. Box 7220/jkspm, Jakarta
12540, INDONESIA. Abstract.
- Clarias pseudoleiacanthus sp. nov. is described from Borneo
(Kalimantan, Indonesia). The new species is distinguished from all other
Southeast Asian Clarias species by the combination of the following
characters: a short distance between the occipital process and the base
of the first dorsal fin ray (4.5-5.6% SL), a very short occipital process
with a broad and rounded tip (length: 5.7-8.0% HL), the anterior edge
of the pectoral spine smooth and without serrae, 17-19 gill rakers on
the first branchial arch, and a relatively short anal fin compared to
C. nieuhofii (48.4-54.4 vs. 59.7-66.8% SL) with 55-57 rays.
Clarias kapuasensis sp.nov. is described from the upper part of
the River Kapuas (Western Kalimantan, Borneo, Indonesia). The new species
is distinguished from all other Southeast Asian Clarias species
by the combination of the following characters: a very short occipital
process with a broad and rounded tip (length: 5.2-6.6% HL), a relatively
long distance between the tip of the occipital process and the dorsal
fin origin (6.4-8.7% SL), the anterior edge of the pectoral spine smooth
and without serrae, 21-22 gill rakers on the first branchial arch, and
a relatively short anal fin compared to C. nieuhofii (48.7-53.1
vs. 59.7-66.8% SL) with 51-60 rays. |
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