Fish is a vital food for humans and many animals. We report an environmental monitoring study to assess the trace metals in fish species caught from Arabian Sea and commercially available in the coastal city Karachi, Pakistan. Heavy metals such as copper, iron, lead and cadmium were determined in the skin, fillet and heart of the fish species Pampus argenteus, Epinephelus chlorostigma, Rachycen...

This study aims to determine the population dynamics of J. belangerii fish in waters Barumun River, Labuhanbatu Regency. Sampling was carried out for 3 months, starting October – December 2021. The results showed relationship between length and weight negative allometric with a b value 0.713 (b3). dominated by individual lengths 14.5 - 38 cm body range 30-80 grams. totic acid (L∞) is 41.55 grow...

Given the identification of new species Johnius taiwanesis, genus in Taiwanese water is here reviewed through a collection field samples, museum specimens, and review scientific literature. Seven valid were successfully identified distinguished based on gill raker length, tip upper jaw to mouth hinge lower length second spine anal fin. Our phylogenetic tree cytochrome oxidase subunit I (COI) sh...

Monthly fish samples were collected from one location at Shatt Al- Basrah Canal July 2008 to June 2009, using coastal seine net of dimensions 80 m length and 8 height with a mesh size 10×10 mm. Water temperature, salinity water transparency measured. Fishes identified in the laboratory total lengths weights Catch per unit effort was estimated for 22 species during sampling period. The biotic fa...

Single-species fisheries management (SSFM) is applied to many ecosystems around the world. The associated ecological impacts are usually not well understood due lack of considering trophic interactions among species in ecosystem. This impedes implementation SSFM an ecosystem context and reduces our ability understand possible fishing activities. study focuses on two economically important Jiaoz...