Abstract Intraspecific morphological variation may reflect phenotypic plasticity or adaptive divergence. While shape divergence occur more likely among isolated populations with reduced gene flow, responses to heterogeneous environments, even in spatially connected populations. We evaluated both processes while examining variations seven wild of snakehead fish ( Parachanna obscura ) along clima...

Lake Siombak is a tidal lake that an estuary around the covered with various mangrove trees. It interesting to study fish's spatial and temporal distribution as unique distinctive ecosystem. This research was conducted for year (from September 2018 August 2019). Fish sampling performed by installing gill nets (mesh size 1 inch) cast 0.5 inch). Gill were installed at high low tides during full m...