Wullur, S., S. Kumagai, Y. Sakakura & A. Hagiwara. (2018). Assessment of different minute zooplankton in the larval rearing of rusty angelfish Centropyge ferrugata. AACL Bioflux. 11(5):1495-1501.

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Wullur, S., S. Kumagai, Y. Sakakura & A. Hagiwara

2018

11(5):1495-1501.

Publication

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Angelfishes of the genus Centropyge are commercially valuable aquarium fish. Although success in domesticating the broodstock of angelfishes is already reported, larval rearing remains a failure because their larvae require very small live food. Recognizing this demand, we assess the acceptability of four minute zooplankton including rotifers Proales similis, Keratella sinensis, Brachionus rotundiformis (SS-type), and nauplii of copepod Paracyclopina nana as feed for rusty angelfish Centropyge ferrugata larvae. The average size of the four zooplankton we used ranged from 80 to 160 ?m. Results showed that feeding incidence on P. similis on the first day of feeding (3 days after hatching, 3 DAH) was 40%, and as high as 60% on day 6 after hatching (6 DAH), while it was 0 to 20% on other zooplankton tested. Larvae in the control group (without feeding) did not survive on 5 DAH. Standard length of the larvae in the two trials was not significantly different among treatments, but survival was significantly higher in P. similis (19 to 38%) than other zooplanktons (0 to10%). Results of this study indicate the usefulness of P. similis as starter food for C. ferrugata larvae. Key Words: Proales similis, Brachionus rotundiformis, rotifer, live food, copepod.

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