Aspects of reproductive biology such as maturity, spawning season, sex ratio and fecundity of Megalaspis cordyla were studied for a period of one year along the coast of Ratnagiri. Monthly distribution of maturity stages showed that the spawning season of M. cordyla was May-January with peak spawning during May-October. The observed sex ratio was 1:1.3 (male: female). The gonado-somatic index values were high during August for both the sexes. The fecundity increased with increasing length and weight. Fecundity of the fish was found in range from 92,268 to 5, 49,900 the average being 2,47,671 eggs.

Maturity stages, horse mackerel, spawning, fecundity.