Length-weight relationships of 30 species of fish of the river Sô in Benin (West Africa)

Abstract

The weight- length relationships of 30 fish speciesbelonging to 16 families from the So River in southern Benin were studied. The fish were collected from both experimental and artisanal fisheries. The values ​​of the allometric coefficient b resulting from the weight-length relationships ranged from 2,046 to 4, 09 with an average of 3,034. The correlation coefficients are very high and range from 0.626 for Brycinus leuciscus to 0.996 for Oreochromis niloticus. These data constitute an important basis for the management of the fish fauna of the So River and a reference for future studies.