Eleutheronema tetradactylum, also known as Indian Salmon or Rawas, is a threadfin fish of the Polynemidae family. This highly commercial fish known for uses in aquaculture occur mainly over shallow muddy bottoms in coastal waters forming loose schools. Adults of this highly vulnerable species enter rivers during winter. Adults feed on prawns and fish with occasional polychaetes, while juveniles feed on prawns shrimps and mysids.