pachynema Ng, 1999
contributors to this species:
||Dorsal spines (total):
0; Dorsal soft rays (total): 0 - 0; Anal soft rays: 90 - 101;
Vertebrae: 63 - 64. Snout with a gently sloping ventral profile
(ventral angle of snout 40°-42°), relatively fewer anal-fin
rays (90-101), and larger eyes (eye diameter 13.0-16.4% HL) set
closer together (interorbital distance 33.7-36.6% HL). Mature
males have membranous extensions on both the anterior and posterior
edges of the maxillary barbel. Pectoral spine and articulated
segments sexually dimorphic in mature individuals. Males with
spine broad and somewhat flattened dorsoventrally, with 10 distinct
posterior serrate, increasing in size distally; proximal articulated
segments with 17 well-developed posterior serrae; distal-most
segments have smaller serrae. Females or juveniles with spine
slender and without serrae; proximal articulated segments with
6 minute posterior serrae; distal segments with 5 minute serrae.
Absence of dorsal fin; short stiff hooked maxillary barbels; posterior
nostril above front margin eye. This species was previously misidentified
as Ceratoglanis scleronema from the Chao Phraya drainage.
Inhabits mainstream river. Carnivorous, feeding on insects and
benthic fauna. Reported to be quite rare in Thailand due to lost
habitats and over fishing. Remarks: The specific
name comes from the thicker barbels of this species compared to
its only congener, C. scleronema. Not an aquarium fish
as they are reported to be very hard to keep and will die soon
after capture, as they are a deep water living fish in their natural
Chao Phraya and Mekong River basins. Type locality:
Prachinburi Market, Thailand.
1999 A review of the Southeast Asian catfish genus Ceratoglanis
(Siluriformes: Siluridae), with the description of a new species
from Thailand. Proc. Calif. Acad. Sci. 51(9):385-395.
Kottelat, M. 2001 Fishes of Laos.
WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p.
Froese, R. and D. Pauly. Editors.
2009.FishBase. World Wide Web electronic publication. www.fishbase.org,