THE EFFECT OF DENSITY AND STADIA ON SURVIFAL RATE OF NILEM (Osteochillus hasselti) JUVENILE TRANSPORTED IN THE MORNING

Fisheries

This study was conducted to determine the size of the fish and the total density for each liter of water that can be used as a benchmark in the transportation of nilem fish fry which was carried out from September to October 2021 at the Ciparanje wet laboratory, Faculty of Fisheries and Marine Sciences, Padjadjaran University experimentally using a factorial randomized block design. (RAKF) consisting of two factors, namely density with four levels (10, 20, 30 and 40 fish/liter) and fish size with two levels (3-5 cm and 5-8 cm) which were repeated three times. Parameters observed were survival by the number of fish density and size post-transport and post-harvest for 7 days, water quality consisting of temperature, DO, pH, and ammonia. The results showed that nilem fish seeds that had high survival were transported in the morning starting at 05.00-10.00 or for 5 hours post-transportation in the treatment with the highest density of 40 fish/liter with fish size 5-8 cm having an SR reaching 100%. Meanwhile, for post-maintenance 7 days, survival was low at a density of 5-8 cm by 95%. In addition, for water quality parameters at fish sizes of 5-8 cm the average temperature is 25.37 oC, DO is 6.68 on average, pH is 6.58, and ammonia is 0.020 mg/l on average.

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