Hatchery production of the clownfish Amphiprion nigripes at Agatti island, Lakshadweep, India.
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Date
2012-05
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Abstract
Healthy individuals of matured clownfish, Amphiprion nigripes and sea anemone, Heteractis magnifica were
collected from the Agatti island lagoon by snorkeling. During ‘conditioning’ for 3 months, pair formation occurred
and the same were transferred to rectangular fiber glass spawning tanks of 1000 l capacity. Suitable water
quality parameters were maintained. The fishes were fed with tuna eggs, boiled clam meat, squid, octopus and
trash fish thrice in a day. Reproductive behaviour and embryonic development were documented. Spawning
took place in between 0900 - 1100 hr and hatched-out occurs, after sunset following an incubation period of
8-9 days. Size of the newly laid egg was 2.0-2.2 mm in length and 1.0-1.2 mm in width. The larval rearing
tanks were maintained with UV-treated water and followed the optimal physico-chemical parameters as in the
parent tanks. The different light regimes and diets were used for the successful larval rearing. The maximum
larval survival (61%) was achieved at the photoperiod of 24 L/0D. Within 15-17 days, the larvae metamorphosed
and took up parent colouration and comparatively high growth rate was observed when fed on algae enriched
rotifer than those with poly unsaturated fatty acid (PUFA).
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Keywords
Hatchery production, Amphiprion nigripes, Embryonic development, Larval rearing, Photoperiod
Citation
Kumar T T Ajith, Gopi M, Dhaneesh K V, Vinoth R, Ghosh S, Balasubramanian T, Shunmugaraj T. Hatchery production of the clownfish Amphiprion nigripes at Agatti island, Lakshadweep, India. Journal of Environmental Biology. 2012 May; 33(3): 623-628.