Size distribution and length-weight relationship of invasive species flowerhorn (Cichlasoma trimaculatum (Günther, 1867) in Lake Mahalona, South Sulawesi

Abstract Lake Mahalona is one of the lakes located in Malili Complex, South Sulawesi and included Natural Tourism Park Area. Cichlasoma trimaculatum are ornamental fish from Cichlidae family that become invasive Mahalona. A total 29 species were recorded this lake, most them endemic fish. It estimated native populations will decline due to alien intentionally or unintentionally The study determine size distribution length-weight relationship C. was conducted Lake. at 11 stations October 2020. Experimental gill nets used catch Bilih. length ranged 10.0 ± 1.57 cm (Kusapa Badilla stations) 18.0 (Benu station), weight 19.0 19.2 g station) 140.0 (Muara station). correlation coefficient (r) value for ranges 0.8685 - 0.9691. growth pattern a negative allometric characteristic. An exception Muara dan Tandu Mata positive allometric.