Eleutheronema tetradactylum (Shaw, 1804)
Fourfinger threadfin

Catalog of Fishes (gen., sp.) | ITIS | CoL
Classification

Actinopterygii | Perciformes | Polynemidae
Synonyms

Polynemus tetradactylus, Polynemus coecus, Polynemus teria, ... more
Common names

Barbure à quatre doigts, Barbudo de cuatro dedos, White salmon, ... more



Main reference
Motomura, H., Y. Iwatsuki, S. Kimura and T. Yoshino. 2002. (Ref. 41639)
Other references | Biblio | Coordinator | Collaborators
Size / Weight / Age
Max length : 200 cm TL male/unsexed; (Ref. 3479); common length : 50.0 cm TL male/unsexed; (Ref. 3479); max. published weight: 145.0 kg (Ref. 4965)
Length at first maturity
Lm ?, range 22 - 24.3 cm
Environment
Pelagic-neritic; amphidromous (Ref. 51243); freshwater; brackish; marine; depth range 0 - 23 m (Ref. 6390)
Climate / Range
Tropical; 32°N - 26°S, 47°E - 154°E (Ref. 57343)
Distribution
Indo-West Pacific: Persian Gulf to Papua New Guinea and northern Australia. Replaced by Eleutheronema rhadinum (Jordan & Evermann, 1902), in East Asia (Japan, China, Viet Nam).
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Short description
Dorsal spines (total): 9; Dorsal soft rays (total): 13 - 15; Anal spines: 3; Anal soft rays: 14 - 16. Pectoral filaments 4; fin membranes vivid yellow in life, except in large specimens, > ca 35 cm SL. Vomer with deciduous tooth plates on both sides, except in juveniles. Posterior part of maxilla deep, 3-4% of SL. Short tooth plate extension onto lateral surface of lower jaw. 7-9% SL (Ref. 41639).
Biology
Glossary (e.g. epibenthic)
Occur mainly over shallow muddy bottoms in coastal waters. Also enter rivers (Ref. 3479, 6390, 11230). Juveniles found in estuaries. During winter, adults ascend the rivers. They usually form loose schools, although larger fish are more often observed in pairs or singly (Ref. 6390). Feed on prawns and fish (largely members of Mugilidae, Engraulidae, and Sciaenidae) with occasional polychaetes. Frequency of crustaceans to fish in the diet varies seasonally. Larvae (7-30 mm TL) feed mainly on copepods and mysids but also take shrimps and prawn larvae (Ref. 57343). Juveniles (31-60 TL) feed on prawns shrimps and mysids (Ref. 57343). Protandrous hermaphrodites. Marketed fresh, frozen, and dried or salted.

 

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From Fishbase



Salmon Threadfin