This paper deals with the experiments of feeding habits and growth of larval Clarias lazera. Two or three days after they were hatched, the larvae began to feed, though their yolk sac still remained. The total length of larvae are 5-5.5 mm; their oral width are 132-138μ, and the initial food are rotifers. With the growth of larvae, the feeding ratio of cladoceran, copepods and chironomids increases repidly. Rhythm of feeding intensity is obvious during the day and night. The highest feeding intensity is 18:00-22:00 at night. The relationship of total length with age falls on a straight line, but that of weight with age is exponential. The regression equation of total length, weight and age is determined through calculation based on the measurement of 174 individuals. The general equation for the larvae can be expressed as W = 0.004927 L(^a.1988).