This manual is primarily intended for teachers, students and researchers interested in a practical approach to fishery science. The manual consists of three parts (i) Pisciculture, (ii) aquarium keeping and (iii) consists of various tools and techniques divided in 24 chapters. This manual is sectioned under the heads, ideal fish farm, identification, classification of various fish and plants, fecundity, morphometry, fish scale study, aquatic insects, fish ...