Abstract
The study identified the origin, habitat and ecological classification of 78 bony fish species belonging to 30 families available in Khulna division. Of the total fish species, 9 were found exotic. Among the collected 78 species, a total of 69 fish species were inhabitants of freshwaters while 4 were found in both fresh and brackish waters and the rest 5 species were found in both brackish and marine waters. The collected fishes belonged to eight trophic guilds; carnivore (43) was the dominant group followed by omnivore (16), insectivore (5), planktivore (5), benthivore (4) and larvivore (1). The fishes also represented eight reproductive guilds; phytolithophil (35) was the most dominant guild followed by phytophil (20), pelagophil (6), psammophil (6), guarder (4), bubble nester (4) and mouth brooder (1). The present study indicates that Khulna Division is very rich in fish biodiversity having diverse forms of trophic and reproduction guilds.
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