Nursery management and biosecurity guidelines for small indigenous fish species (SIS)

Abstract

Small indigenous fish species (SIS), such as mola, punti, and tengra, play a vital role in improving nutrition and supporting livelihoods in Bangladesh. Successful production depends on the availability of quality seed, effective nursery management, and sound biosecurity practices. This guideline presents practical approaches for rearing SIS larvae in nursery ponds to produce healthy fingerlings for stocking in grow-out ponds. It covers pond preparation, larval stocking and acclimatization, feeding and fertilization regimes, water quality management, and timely harvesting. Emphasis is placed on simple, cost-effective biosecurity measures to prevent predator entry, reduce disease risks, and maintain optimal water conditions, thereby enhancing survival, growth, and productivity.