Eleutheronema tetradactylum

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Fourfinger threadfin
Eleutheronema tetradactylum(Shaw, 1804).jpg
Eleutheronema tetradactylum
Scientific classification
E. tetradactylum
Binomial name
Eleutheronema tetradactylum
(Shaw, 1804)

Eleutheronema tetradactylum, also known as fourfinger threadfin, Indian salmon, blue threadfin, or Rawas, is a threadfin fish of the Polynemidae family.[1] This is a commercially valuable species, known for uses in aquaculture.[1] It occurs mainly over shallow muddy bottoms in coastal waters,[2] often forming loose schools.[3] Adults of this species enter rivers during winter.[3] Adults feed on prawns, fish, and occasionally polychaetes,[4] while juveniles feed on prawns, shrimps, and mysids.[4] This species is vulnerable to overfishing.[5]. This Indian Salmon is widely known as Lakkha/Gurjali fish in Bangladesh.


  1. ^ a b Motomura, H., Y. Iwatsuki, S. Kimura and T. Yoshino, Revision of the Indo-West Pacific polynemid fish genus Eleutheronema, 2002, p. 47-61, Reference 41639, FishBase; Retrieved: 2007-12-16
  2. ^ Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, Australian fisheries resources, 1993, p. 422, Reference 41639, FishBase; Retrieved: 2007-12-16
  3. ^ a b Menon, A.G.K. and M. Babun Rao, Polynemidae, 1984, Reference 6390, FishBase; Retrieved: 2007-12-16
  4. ^ a b Motomura, H., Threadfins of the world, 2004, p. 117, 57343, FishBase; Retrieved: 2007-12-16
  5. ^ Cheung, W.W.L., T.J. Pitcher and D.Pauly, A fuzzy logic expert system to estimate intrinsic extinction vulnerabilities of marine fishes to fishing. Biol. Conserv, 2005, p. 97-111, Reference 59153, FishBase; Retrieved: 2007-12-16