Growth Patterns Analysis of Yellow-Finned Medaka (Oryzias profundicola) as Endemic Fish in Lake Towuti

Abstract

Lake Towuti has the potential biological resource and a wide diversity of endemic fish with ecological and economic value. Lake Towuti is also known as a biodiversity hotspot that needs attention to conservation because of the number of threads increasing. Fisheries resources in Lake Towuti has a significant role in increasing income, expanding job opportunity, and as a nutritional source for the community. Lake Towuti is also known as rich in endemic fisheries that have economic and ecological value. One of them is known as Yellow-Finned Medaka (Oryzias profundicola). Yellow-Finned Medaka is a biological native resource and endemic fish in Lake Towuti, South Sulawesi. A study about this fish has never been conducted before so it needs research to analyse the growth pattern in Lake Towuti. This study aims to determine the growth pattern of yellow-finned medaka in Lake Towuti. Samples were collected from January to July 2022 every month and measured their length and weight. During the study were found 2949 fish, consisting of 1202 males and 1747 females. The length-weight relationship was W=1.3366L0.0041 for males and 0.9127L0.0187 for females. These results indicate that the growth pattern for yellow-finned Medaka is negative allometric.