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Issue: Vol. 580 No. 1: 23 Jul. 2004
Type: Article
Published: 2004-07-23
DOI: 10.11646/zootaxa.580.1.1
Page range: 1–11
Abstract views: 33
PDF downloaded: 21

Ompok platyrhynchus, a new silurid catfish (Teleostei: Siluridae) from Borneo

Fish Division, Museum of Zoology, University of Michigan, 1109 Geddes Avenue, Ann Arbor, Michigan 48109-1079, USA
Department of Biological Sciences, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260
Pisces Ompok Siluridae Borneo Brunei Temburong River Southeast Asia

Abstract

Ompok platyrhynchus, a new species of silurid catfish is described from the Temburong River drainage in Brunei Darussalam, northern Borneo. Ompok platyrhynchus can be distinguished from all Southeast Asian congeners, except for O. hypophthalmus, O. rhadinurus and O. urbaini, in having 74 80 (vs. 40 70) anal-fin rays. Ompok platyrhynchus differs from O. hypophthalmus, O. rhadinurus and O. urbaini in lacking a distinct nuchal concavity, having a more slender body (13.5 17.7% SL vs. 18.9 24.5), shorter snout (37.1 38.1% HL vs. 39.4 47.5) and maxillary barbels (reaching to middle of pectoral fin vs. reaching to anterior third of anal fin), and more vertebrae (59 60 vs. 47 58).

References

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