Study on biology and fishery of Polynemus heptadactylus Cuv. and Val.

Abstract

The thread-fins or Polynemids are a group of partly pelagic and partly demersal fishes inhabiting the coastal waters throughout the tropical belt, extending upto considerable depths and even entering fairly often the estuarine and backwaters. The species do not form shoals for which reason they do not occur in great abundance but move in schools supporting fisheries of some magnitude. The species in generel wherever they occur are classified as high class table fishes