Habitat: Known
with certainty from the Red Sea and the northwestern
Indian Ocean. A closely related form occurs
in the Philippines and Gulf of Thailand. The wider
distribution usually given for this species stems
from misidentifications of similar species overlapping
its range. Also reported from Australia, Polynesia
and Japan and rarely in the Mekong delta. A marine
species often found in estuaries, but rarely enters
freshwater. Typically euryhaline. Reported to occasionally
ascend into fresh water. Recorded at temperatures
ranging from 26-29°C. Diet: Feeds
mainly on crabs, prawns, mantis shrimps (Squilla species)
but also on fishes and mollusks. An important food
fish. Marketed mostly fresh; often dried. Etymology:
The genus name Netuma: a Tamil word that
means "dance". The specific name thalassina:
of the sea, a marine and brackish-water catfish described
from the Red Sea.
Eastern
Africa, south and southeast Asia to New Guinea and
Australia:India, Thailand,
Vietnam, Indonesia, Malaysia, Philippines, China,
Papua New Guinea and Australia. Type locality:
(Bagrus thalassinus Rüppell, 1837:)
Massawa, Eritrea, Red Sea.
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