Maturity, spawning and sex ratio of the ribbonfish Trichiurus lepturus Linnaeus off Kakinada

The results of a study conducted on Trichiurus kptums during 1967-70 and supplemented \nby observations made during 1986-87 are presented in this paper. Majority of males attain maturity \nat 42 an and females at 46 cm length. Spawning is prolonged and takes place during January-August \nperiod. The individual fish spawns atleast twice during the spawning seasan. Fecundity varied from \n2,380 ova in 42 cm fish to 27,320 ova in 77 cm fish. The annual sex ratio indicated that males \noutnumbered females in all the years. The sex ratio in relation to the length of fish showed that \nmales dominated between 26-70 cm, the proportion of males and females was equal at 74 cm, \nfemales outnumbered between 78 to 94 cm and all.the fish were females beyond the 94 cm length \ngroup.