Journal of the Marine Biological Association of India

Length-weight relationship and relative condition factor of the canine catfish-eel Plotosus canius Hamilton.

Volume 23 Issue 1&2

M. Sinha

Abstract

The values of both the constants of length-weight relationships of male and female Plotosus canius, tested statistically, indicated their difference to be non-significant. Thus, a general length-weight relationship, applicable to both sexes, has been calculated. 'Cube law' has been found to be not applicable in case of this species as the 'b' value of the length-weight relationship is significantly different from 3. Four periods in the annual cycle of this fish, resulting mainly due to changes in gonad conditions, are indicated by studying the fluctuations in monthwise relative condition factor.

Date : 31-12-1981