Description:
Nasal barbels longer than head; maxillary barbels
reaching to caudal fin; 7-9+18-23 gill rakers on upper
and lower arm of first arch. Habitat:
Adults occur most commonly in the tidal zone and brackish
water reaches of large rivers. In the Mekong basin,
it is found in fresh water well upstream in the Tonlé
Sap, Cambodia. Diet: Feeds mainly
on insects and crustaceans. Reproduction:
Oviparous, distinct pairing possibly like other members
of the same family. Etymology: The
genus name Mystus: "Mystax" meaning
whiskered (hair on the upper lip) Mystus was
first used by Belon in 1553 to describe all fish with
whiskers. The specific name wolffei: in honour
of Bleeker’s friend J. Wolff, military doctor,
who collected type.
Asia:
Large rivers from Thailand to Indonesia, in the tidal
zone and brackish water. Type locality:
Bandjarmassing, in fluviis.
Size:
15.0cm (6ins)
Temp:
22-28°C (71-83°F)
p.H.
6.0-7.5.
IUCN
Red List
Although
there is no detailed information on the population size
and trend of this species, it is still abundant throughout
its known distribution. While there may be localised
or regional threats, they are unlikely to affect this
species on a range-wide scale, and it is found within
several protected areas. Therefore, it is assessed as
Least Concern
(IUCN 2019).
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