COMPARATIVE ANALYSIS OF GONADO-SOMATIC INDEX AND DOBRIYAL INDEX FOR DETERMINATION OF SEXUAL MATURITY IN NEMACHEILUS DENISONI DAY

Fishes exibit different types of spawning tendencies due to difference in habitat and climatic conditions of different regions. In order to achieve success in fish culture, it is important to assess the exact maturation period with fecundity of cultivable fishes. Studies on the maturation and spawning biology were conducted with the help of macroscopic observations (Gonado-somatic index and Dobriyal index), microscopic observations (development, Intra-ovarian maturity, occurrence of fish of various maturity stages during different months of the year and observations of mature and spent fishes) and also some field observations (observations of eggs and fry in the habitat).