Feeding appropriate formulated diet for improving gonad maturation and spawning of brooder of some native fishes of indonesia

Abstract

More than 1200 native Indonesian fish species inhabiting Indonesian inland waters have been used as human daily fish consumption. It brings to decline their population and even its species by year. Efforts of spawning some native fish species have been conducted, but the successful spawning limited during the rainy season. This paper, therefore, reviews the results of research related to using appropriate formulated diets for gonadal maturation and spawning some economically important native fishes. The tested fishes used were hoven’s carp (Leptobarbus hoevenii), knife-fish (Chitala lopis), Asian red-tail catfish (Hemibagrus nemurus), kissing gourami (Helostoma temmincki), snake-head (Channa striata), and hard- lipped barb (Osteochilus hasselti), This study showed that in general, formulated diet containing about 35% protein fed on these species resulted in gonad maturation whole year and successfully spawned under controlled hatchery. The larvae survived at a high rate after feeding a natural diet up to 30 day-age. Mass production of the juvenile could support the development of its culture and be used as restocking in inland open-waters as well.