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Title: Blue barred parrot fish (Scarus ghobban Forsskal, 1775) culture in sea cages at Rameshwaram Island, Southeast coast of India
Authors: Jayapal, Santhanakumar
Ramaiyan, Sendhil Kumar
Gopal, Dharani
Kothalia, Rasheeda
Manambarakat, Vijayakumaran
Ramalingam, Kirubagaran
Keywords: Parrot fish;Scarus ghobban;Trap fishing;Sea cages and sea farming
Issue Date: Aug-2017
Publisher: NISCAIR-CSIR, India
Abstract: Two square HDPE cages of 2 x 2 x 2.5 m (10 m3) size were deployed at 6 m depth in the sea at a distance of 600 m from the shore at Olaikuda fishing village. Live parrot fishes of <450 g procured from the trap fishers were sorted out into two size groups viz. 200-245 g ( 214.00 ± 16.63 g) and 375-450 g ( 425.00 ± 20.64 g) and stocked @ 8.5 kg/m3 separately in these cages. Low value shrimp head waste was fed @ 8-10% of total biomass stocked. The fishes were reared for two months and the culture was terminated due to severe blooming of the blue green alga, Lyngbya sp. Average weight gain during this 2 month culture varied between 44 g (GR 0.73 g/day) in the smaller group (200-245 g) and 98 g (GR 1.61 g/day) in the bigger group (375-450 g). A second culture trial was conducted with wild caught young fishes of approx. 100 to 140 g size and stocked them in a 9 m dia circular cage of 320 m3 cultivable volume. Culture was conducted for 130 days with pellet feed and a survival rate of 95% with the growth rate of 0.61 g/day (total average weight gain of 79.0 g).
Page(s): 1614-1620
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.46(08) [August 2017]

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