Growth performance and survival rate of Boeseman's rainbowfish (Melanotaenia boesemani) in natural spawning technique at Depok, West Java, Indonesia

Boeseman's rainbowfish is an endemic ornamental fish from Papua. This fish is popular because of its beauty and uniqueness. Problems that occur in rainbow fish farming are low growth rates and high mortality rates in the larvae stage. The purpose of this research is to analyze the growth performance and survival rate of Boeseman's rainbowfish. This research was conducted at BRBIH Depok, West Java, on December 17, 2018, until January 17, 2019. The technique is used was natural spawning technique. In this technique used aquarium containers and fiberglass tanks. Maintenance of the parent is done by feeding Chironomus sp. twice a day. The parent selection is carried out before the spawning process. The results of spawning for 20 days had a fertilization rate of 91.47 % and a hatching rate of 86.12%. Growth monitoring results of the average growth rate were 0.0031 g/day, the specific growth rate was 0.013-0.095 %bb/day and the survival rate of larvae was 47.24%.