Optimum stocking density and tank size for larval rearing of the grouper, Epinephelus coioides
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The effect of stocking of stocking density and tank size on early growth and survival of grouper, Epinephelus coioides (=suillus) larvae were determined. In one experiment, larvae were stocked in 500L tanks at densities of 5, 10, 20 and 30 per liter and fed rotifers at 15 ind/mL. After 21 d, larvae attained best growth (9.6 mm) and highest survival (32.2%) at 20/L. In another experiment, larvae were stocked at 30/L in 40 L, 200 L and 500 L circular fiberglass tanks. Survival was highest in 500 L (22.3%) and lowest in 40 L tanks (0.5%), but larvae in 200 L tanks were larger (8.2 mm total length, 1.5 mg dry weight) on day 21. Thus in small tanks, 20 larvae/L is the optimum stocking density. In larger tanks of 500 L, 30 larvae/L is feasible.
Duray, M. N., Estudillo, C. B., & Alpasan, L. G. (1997). Optimum stocking density and tank size for larval rearing of the grouper, Epinephelus coioides. In Y. Zhou, H. Zhou, C. Yao, Y. Lu, F. Hu, H. Cui, & F. Din (Eds.), The Fourth Asian Fisheries Forum: Proceedings of the Fourth Asian Fisheries Forum, Beijing, 16-20 October 1995 (pp. 48-52). Makati City, Philippines: Asian Fisheries Society.