The Spinycheek grouper (Epinephelus diacanthus) is a marine species usually associated with rocky bottoms and reefs. Groupers are one of the most important carnivorous fishes of coral reefs, feeding mainly on the crustaceans and fishes. The present study revealed the food and feeding biology of Epinephelus diacanthus collected from the South Konkan coast of Maharashtra. The percentage of dietary concentration and feeding intensity was investigated from October 2017 up to June 2018 The results were promising and revealed the information on the food consumption of fishes in the study area and helped to understand the fish’s feeding biology. | Food and feeding biology of brackish water fish Epinephelus diacanthus along the south Konkan Coast of Maharashtra India