Description:
This genera has a posterier nostril located near anterior
nostril. Barbels are ribbon shaped, with a mandibular
and a mental pair on lower jaw. 6 pelvic fin rays.
There are two species in this genus. L.
hexanema and L.
longibarbus. Dorsal spines (total): 1; Dorsal
soft rays (total): 6; Anal spines: 0; Anal soft rays:
41 - 47; Vertebrae: 44 - 46. Compared to L.hexanema,
this species differs in having a longer anal fin base
(38.6-41.5% SL versus 34.8-37.9) with more anal fin
rays (41-47 versus 39-42), a smaller eye (eye diameter
20.1-23.6% HL versus 28.6-38.5) and a larger interorbital
distance (47.0-55.6% HL versus 37.9-47.3). Habitat:
Inhabit large rivers with turbid and slow or standing
waters. Diet: Feeds on fishes and
zooplankton. Reproduction: Oviparous,
eggs are unguarded. Etymology: The
genus name Laides: –ides, descendant
of: replacement name for Lais Bleeker 1858, preoccupied
by Lais Gistel 1848 in Tunicata (Lais is Sundanese
name for L. hexanema). The specific name
longibarbis: Long barbels. Remarks:
This species was redescribed by Ng. H.H. in 1999 (Formerly
in the Schilbeidae family).
Common
Name:
None
Synonyms:
Pangasius longibarbis
Family:
Ailiidae
Distribution:
Asia:
Mekong, Mehklong, and Chao Phraya River basins. Type
locality: Me Kong at Chieng Sen, North Siam.
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