The effort for the preservation of biodiversity through the production of larvae of kurumoi rainbow fish (Melanotaenia parva) at different size of the broodstock

Abstract

Kadarini T, Subandiyah S, Zamroni M. 2015. The effort for the preservation of biodiversity through the production of larvae of kurumoi rainbow fish (Melanotaenia parva) at a different size of the broodstock. Pros Sem Nas Masy Biodiv Indon 1: 1227-1232. Rainbow fish is one of the endemic fishes in Papua. Today there has been a degradation of their environment and habitat. The appropriate measures can protect them at different stages of culture and breeding. Breeding activities cannot be separated from the spawning broodstock. The size of the broodstock will affect the production of larvae. Yet the broodstock ability of kurumoi rainbow fish to produce larvae optimally according to their size and age is unknown. The natural size of the male broodstock can reach 15 cm but it is less than that in culture. The purpose of this study was to determine the production of kurumoi rainbow fish larvae (Melanotaenia parva) with the size of the different broodstock. Containers having a size of 50x25x40 cm3 were used to keep as much as 12 eggs. These containers were used for broodstock maintenance and spawning. Each aquarium consisted of a pair of broodstock, a male and female. Different size of broodstock was used in this research as treatments such as (i) the average total length of 9.77 ± 0.72 cm male broodstock and 8.43 ± 0.66 cm female broodstock, (ii) A total length of average 6.13 ± 0.39 cm male broodstock and 5.48 ± 0.28 cm female broodstock. Each treatment was repeated 6 times. Broodstock was fed bloodworm at 9:00 and 15:00. The results showed that the average female broodstock rainbow female fishes having a total length of 8.43 ± 0.66 cm and male fishes having a total length of 9.77 ± 0.72 cm showed better performance and produced larvae 75.92 ± 40.74 once spawning with egg diameter 1:22 ± 0.164317 mm and hatchability of eggs 92.5 ± 3.873%.