Biological Parameters of Flowerhorn Cichlid in Panglima Besar Soerdirman Reservoir, Indonesia
DOI:
https://doi.org/10.11113/mjfas.v22n1.4990Keywords:
Cichlids, Gear Selectivity, Introduced Fish, Midas Cichlids, Serayu RiverAbstract
Flowerhorn cichlids are potentially invasive fish species because of their wide ranged in trophic level and reproductive properties. This study aims to analyze several biological parameters of flowerhorn cichlids in Panglima Besar Soedirman Reservoirs that consist of many native fishes from Serayu River. Fish were collected from the fisherman that operated using multiple gears and landed the flowerhorn fish in Seakong Fish Market, Wanadadi, Banjarnegara, Indonesia from August to October 2025. Fish were then analyzed in Pescica Marina Laboratory of Fisheries and Marine Science, Universitas Jenderal Soedirman. Biological aspects that were assessed consist of morphology, length-weight relationship (LWRs), relative condition factor (Kn), gonadosomatic index (GSI), length at the first capture (Lc), and maturity (Lm). The results showed that males have a higher condition factor (1.05), although with a negative allometric growth pattern (b<3). Conversely, the female was heavier (444.34 ± 26.34 g) and longer (117.58 ± 22.84 mm). The mean gonadosomatic index for male (0.75) and female (4.70) are related to the gonad maturity stage in which the male are mostly immature to maturing but females are dominantly mature. The length of maturity of female is 91 mm while male is 219.2 mm, and their length at the first capture is 107.9 mm and 109.5 mm, respectively.
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