Pustaka Ilmiah Universitas Padjadjaran

Abstrak

Selecting Fish Combination of Polyculture to Reduce Periphyton Abundance in Floating Net Cage in Cirata Reservoir, West Java, Indonesia

The aim of this research is to find the best combination of fishes in polyculture at Floating net cage in order to reduce periphyton abundance and increase aquaculture productivity in Cirata Reservoir. The research has been conducted from February to March 2015. The research method used was completely randomized design with three treatments and three replications. Treatments consists of fish combination of tilapia with silver barbs, carp with silver barbs, and black pacu with silver barbs and cultured for five weeks in floating net cage size (1 x 1 x 1) m3. weight of fishes were 10 g each for tilapia, carp and silver barbs and 4 g for black pacu, stocking density were 80 fishes for each cage. The result Showed that combination of black pacu and silver barbs produced highest productivity of 459.77 gr / m3 or 82 % during five weeks. The Lowest periphyton abundance resulting in a combination of carp and silver barbs of 28 345 cells / cm2. In conclusion black pacu and silver barbs is the best combination due to growth rate and aquaculture productivity but not in periphyton abundance .