抄録
We investigated the period until diet acceptance in the wild red-spotted grouper Epinephelus akaara under captive condition. Experiments were conducted under three dietary treatments: two commercial diets, floating pellet (FP) and sinking pellet (SP), and combination of SP and sliced fish (SP+SF). We repeated the observation twice using different-sized fish with average initial body weights 390 g (n = 23) and 290 g (n = 18), respectively. The fish accepted SP and SP+SF within four days both in the two trials. In the SP + SF treatment, fish accepted SF at first and then fed on SP 12-days later in the large fish and 3-days later in the small fish, respectively. The first feeding of large fish on FP (11-days) was later than small fish (4-days). Therefore, wild red-spotted grouper is recommended to feed the SF or SP.
