Morphology character and length-weight relationship of Goblinfish (Neovespicula depressifrons) Tetraogidae in Percut Sei Tuan Coastal, North Sumatera, Indonesia

Abstract

The research was conducted in Percut Sei Tuan Aquatic with goblinfish (Neovespicula depressifrons) as the main object. Goblinfish was caught at a brackish aquatic which is mangroves are grown. This study aimed to analyse the relationship between weight-length, growth pattern, length-frequency distribution, and condition factors of goblin fish. Danish seines with mesh size net of 1 inch, ½ inch, and ¼ inch was used for fishing. After the fish caught, then measured the total length and weighed, measurements were conducted in the laboratory. The total length of fish caught is in the range of 24-65 mm and a weight of 0.2 - 3 g. The resulting group size consisted of 7 groups with class intervals of 42-47 mm is the mode group size. From the analysis of the length-weight relationship, the constant value of b = 0.972 and the value of the condition factor ranges from 0.90 to 1.37 with an average value of CF > 1.