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Ceratoglanis
pachynema Ng, 1999
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Image
contributors to this species: |
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ScotCat
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Other
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Relevant Information: |
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 habitat. |
Common
Name: |
Club-barbel sheatfish |
Synonyms: |
None |
Family: |
Siluridae |
Distribution: |
Asia: Chao Phraya
and Mekong River basins. Type locality: Prachinburi
Market, Thailand. |
Size: |
28cm. (11ins) |
Temp: |
22-26°C (71-79°F) |
p.H. |
6.0-7.0. |
Reference: |
Ng, H.H. 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, version
(08/2010). |
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