Length-weight relationship and condition factor of Hamilton's thryssa fish (Thryssa hamiltonii) from Pabean Bay, West Java, Indonesia

Ade Sunaryo

doi:10.1051/e3sconf/202132201001

Abstract

The length-weight and condition factor can be used as an indicator of the condition for fish growth and to determine the suitability of the environment. The research objective was to evaluate the relationship between length-weight and condition factor of Hamilton's thryssa fish (Thryssa hamiltonii) from Pabean Bay West Java Indonesia. The researchers have been carried out to analyze the two essential parameters: the lengthweight relationship that can be used to evaluate and investigate stock density and condition factor of Hamilton's thryssa fish (Thryssa hamiltonii). A total of 195 fish samples were collected over the 8th month from the sea estuary and measured and weighed during a field survey conducted from April to December 2015. Samples of fish were collected using gillnet and set net. The total length of the fish ranged from 47-186 mm, with body weights ranging from 0.47 - 45.37 g. The results of the length-weight relationship were shown as regression was Y = 7E-07 X3.4339 or W = 7.45 x 10−7.L3.43389, and the condition factors ranged from 0.77 to 1.39. These research results indicated that the growth pattern of Hamilton's Thryssa fish (Thryssa hamiltonii) was positive allometric.

Highlights

Pabean Bay is located in Indramayu Regency, West Java
Hamilton's thryssa fish samples were obtained through fishing activities carried out in Pabean Bay, Pabean Ilir District, Indramayu Regency, West Java Province (Fig. 2)
The results of the analysis of the length-weight relationship of Hamilton's thryssa fish are presented in Table 1 and Fig. 3

Summary

Introduction

Pabean Bay is located in Indramayu Regency, West Java. It is a place where fresh and seawater mixes or is an estuary area located at the mouth of the Cimanuk River. According to [1] found 15 species of fish inhabit the waters of Pabean Bay, the estuary of the Cimanuk River, where 11 of them are marine/brackish fish, and the other four are freshwater fish. One of the species that has been identified from the family Eugraulidae of the genus thryssa is Thryssa hamiltonii This fish with the name Hamilton's thrysaa is considered to have no selling price in Pabean Ilir Village, Indramayu, West Java, and belongs to the group of fish by-catch

Methods

Results

Conclusion