The effects of stocking density, light and shelter on the growth and survival of Clarias
gariepinus fingerings was evaluated. In this experiment African catfish with initial individual
mean weight 0.79"0.1 g were reared at two different stocking densities—5 fish ly1 and 10 fish
ly1 in either sheltered or unsheltered tanks with reduced and normal light condition. In all
conditions growth rate was significantly affected by stocking density. The growth rate was
significantly higher at low densities and in reduced light conditions where shelter was provided.
Survival rate was in excess of 79% in all treatments and was not affected by treatment. q1998
Published by Elsevier Science B.V.