Reproductive Biology of the Ianceolate Goby (Pseudapocryptes elongatus) from the Southeast Coast of Bangladesh

Abstract

Quantitative measurements including the length-weight relationship, condition factor, growth rate, and gonadosomatic index are crucial in the study of fish biology (GSI). The following data was gathered to help guide this study's approach and ensure the validity of the fresh findings. All gobies are what biologists call "multiple-spawners," meaning they reproduce more than once in their short lifespan. It is Pseudapocryptes elongatus, a species with group-asynchronous ovary that spawns serially. This species of burrowing gobiid spawns in the wet season (June- July). South-east Bangladesh (especially the Cox's Bazar district) is teeming with this species. This study's goal was to learn more about Pseudapocryptes elongatus' reproductive traits in Bangladesh's southeast. From August 2021 through February 2022, 977 Pseudapocryptes elongatus were randomly taken from the Fishery ghat market in Chattogram Division. The samples used in this investigation were then collected, categorized, measured, and analyzed. According to the results, TL varied from 8.2 cm to 27.3 cm. The Gobi length frequency data ranges from 8.2 to 27.3cm in total length, and the population is regularly distributed. According to the estimated growth coefficient (b), P. elongatus exhibited negative allometric growth (b 3). ‗Kn‘ the relative condition factor, averaged out to (1.019±0.093) for P. elongatus. The female reached sexual maturity at a size of 15 centimeters (Lm). While the reproductive biology of P. elongatus has been studied elsewhere, no such work has been done in Bangladesh. Knowing how Pseudapocryptes elongatus reproduces can help with conservation efforts, sustainable management practices, and adaptations to the local environment. The findings added to knowledge for fish population sustainability management and give important information on the reproductive biology.