The orange-spotted grouper (Epinephelus coioides), also known as the estuary cod, estuary rockcod, estuary rock-cod, green grouper is a species of fish in the family Serranidae. It is found in the western Pacific, the Indian Ocean, and the Red Sea. It has also been recorded in the Mediterranean Sea as a Lessepsian migrant. Orange-spotted grouper is an economically important marine fish cultured Southeast Asian countries.
Orange-spotted groupers begin life as a female, reaching sexual maturity at around 2 to 3 years old, when 25 to 30 centimetres in length. When the female reaches around 55 to 75 centimetres, at approximately four years old, it changes sex and becomes a male.
Its natural habitats are subtropical or tropical mangrove, open seas, shallow seas, subtidal aquatic beds, coral reefs, estuarine waters, intertidal flats, and coastal saline lagoons. It is threatened by habitat loss and overfishing. This predatory fish reaches up to 1.2 m (3.9 ft) in length.