Abstract
An attempt was made to study the captive breeding and larval rearing of the Cardinal fish Pterapogon kauderni using brackish water for the first time in India. P. kauderni, a mouth brooder fish was procured from the traders at the size range of 4-6 cm and acclimatized under captive conditions. Suitable water quality parameters were maintained and standardized. The fish was fed with boiled clam meat, octopus, oyster, squid and trash fish thrice a day. Spawning took place after two months of rearing, in between 10:45-13:00 hrs and hatch out occurred after the sunset. Incubation was in the male’s mouth, which was extended up to 21-23 days and after hatch out, juveniles were separated from the parental tank. The tanks were maintained with optimal physico-chemical conditions as in the parent tanks. Different light intensities and diets were provided for the successful of juveniles rearing. Good survival (58%) was achieved by adopting the photoperiod 24L/0D. the results illustrated that the photoperiod and different diets given to the juveniles influences the physiological performance of the juveniles. SGR, FCR and AGR of juveniles of P. kauderni increased significantly with the increase of the photoperiod (P<0.05). Babies looked like their parents at birth and within a week, they obtained parental coloration. Comparatively higher growth rate was observed, when they were fed with algal enriched artemia than the Poly Unsaturated Fatty Acid (PUFA). Babies reached the marketable size within 45 days. This study deliberately reveals that, breeding and rearing of the marine fish P. kauderni using the estuarine water and also reveals the physiological response of juveniles of P. kauderni to the change of photoperiod and substantiated that photoperiod and different diets influences the juvenile growth, survival and feeding.
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