Ceratoglanis scleronema (Bleeker, 1862)
Ceratoglanis scleronema
photo by WWF / Vidthayanon, C.

Family:  Siluridae (Sheatfishes)
Max. size:  44 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: Citarum drainage in Java, the Batang Hari and Siak drainages in Sumatra, the Pahang drainage in Peninsular Malaysia and the Baram, Barito, Kapuas, and Rejang drainages in Borneo. Reports of this species from the Chao Phraya drainage are misidentifications of Ceratoglanis pachynema.
Diagnosis:  Anal soft rays: 98-108; Vertebrae: 62-65. Snout with a steep ventral profile (ventral angle of snout 20°-26°), relatively more anal-fin rays (98-108), and smaller eyes (eye diameter 10.7% - 14.0% HL) that are set further apart (interorbital distance 35.4 - 40.9% HL). Mature males have membranous extensions on only the anterior edge of the maxillary barbel.
Biology:  In Kapuas Lakes area in Kalimantan Barat, Indonesia, fishermen reported that this species inhabits rivers and major streams with moderate to fast current (Ref. 56749). Appears to be predatory in nature, feeding on aquatic invertebrates (Ref. 38651) and fish (Ref. 56749).
IUCN Red List Status: Least Concern (LC); Date assessed: 14 May 2019 Ref. (124695)
Threat to humans:  harmless
Country info:   

Entered by: Sa-a, Pascualita - 10.01.96
Modified by: Torres, Armi G. - 02.06.09
Checked by: Torres, Armi G. - 11.07.01

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