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description Journal article public Jurnal Iktiologi Indonesia

Reproductive Biology Climbing Perch Anabas Testudineus (Bloch 1792) at Danau Tempe Kabupaten Wajo South Sulawesi

Hasnidar Hasnidar, Andi Tamsil, Hasrun Hasrun, Andi Muhammad Akram
Published 28 Февраль 2022

Abstract

The high exploitation pressure and decreasing environmental conditions of Lake Tempe due to pollution, sedimentation, growth of aquatic weeds, and the presence of invasive alien fish, namely suckermouth catfish, are thought to have harmed one of the native fish, namely climbing perch (Anabas testudineus). The research aims to analyze the reproductive biology of climbing perch. Fish were caught using gill nets from January to April 2021. The total length of the fish was measured using a caliper (cm), and the weight (g) was measured using an analytical balance. Fish gonads were preserved in a 4% formalin solution. Fish fecundity was calculated based on the gravimetric method. The length distribution of male and female fish was 7.5 - 15.5 and 7.5 - 17.5 cm, respectively. The maximum climbing perch caught was 17.5 cm smaller than the maximum length ever caught, which was 35.0 cm, and the average size was 9.56 cm smaller than the average length of climbing perch, which was 12.5 cm. The ratio of male and female fish as a whole was 1.1: 0.9 or 53%: 47%, while the sex ratio of males and females in spawning was 38%: 62%. Climbing perch is polygamous, i.e., male fish have several partners in one spawning season. The spawning season lasted throughout the research period, with the spawning season's peak in February with a total spawner pattern. Fecundity ranged from 253-10,237 eggs with an average value of 2,571 eggs, and the relationship between length and weight with fecundity was very strong. The growth pattern of male and female fish was negative allometric.

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