Breeding, larval rearing and growth of black Amphiprion ocellaris (Cuvier, 1830) under captivity

Raheem, P K and Rohini Krishna, M V and Surya, S and Gomathi, P and Ambarish, Gop P and Santhosh, B and Raju, B and Anil, M K (2021) Breeding, larval rearing and growth of black Amphiprion ocellaris (Cuvier, 1830) under captivity. Indian Journal of Fisheries, 68 (2). pp. 60-69.

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Abstract

Broodstock development, breeding, spawning, larval rearing and growth of black Amphiprion ocellaris in captivity are described in this study. The black ocellaris, a magnificent colour morph of A. ocellaris was bred in captivity at Vizhinjam Research Centre of ICAR-Central Marine Fisheries Research Institute (ICAR-CMFRI). Two adults, approximately 4-6 cm in total length (TL) were stocked in FRP tanks of 300 l capacity, under optimum water quality. The broodfishes were fed a combination of boiled mussel meat, boiled squid and semimoist feed (protein - 40 %, lipid - 9.5 %, fibre - 2% and moisture - 31%) twice daily at a rate of 3-5% of their body weight. After a period of 1.7 years, the fishes started showing courtship behaviour and initiated spawning. The oocytes were of 3-3.3 mm in length and 1.1-1.9 mm in width. Approximately 200-300 eggs spawned the first time and the number of eggs gradually increased in subsequent spawnings. Spawning was obtained at an interval of 12-14 days providing an average of two spawnings per month. The incubation period of the eggs were 7-8 days and the fertilised eggs hatched on the 8th day, soon after sunset, generally between 19.00 and 20.00 hrs. Different strains of cultured plankton like Isochrysis galbana, Nanochloropsis oculata, L-type rotifer Brachionus plicatilis, calanoid copepod Acartia southwelli and Artemia were used as feed for larvae. The newly hatched larvae with a total length of 5±0.16 mm metamorphosed to juveniles on the 40th day (18.87±0.07 mm). Black ocellaris is a highly priced clownfish and can be used to crossbreed with the normal orange coloured ocellaris clown fish to produce different colour variants. Keywords: Black Amphiprion ocellaris, Breeding, Broodstock development, Larval Rearing, Live feed, Variants

Item Type:	Article
Uncontrolled Keywords:	Black Amphiprion ocellaris, Breeding, Broodstock development, Larval Rearing, Live feed, Variants
Subjects:	Aquaculture > Induced Breeding Aquaculture Aquaculture > Ornamental Fishes
Divisions:	CMFRI-Vizhinjam
Depositing User:	Arun Surendran
Date Deposited:	09 Dec 2021 10:44
Last Modified:	09 Dec 2021 10:44
URI:	http://eprints.cmfri.org.in/id/eprint/15584

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