Aplocheilus blockiiAplocheilus blockii or the green panchax is a species of fish native to waters around India, Sri Lanka, and Pakistan.DescriptionAplocheilus blockii measures 6 centimeters long. It frequently inhabits coastal habitats that either contain brackish water or fresh water. It feeds on larvae, insects, and fish fry.NameThis species was described by the German aquarist Johann Paul Arnold in 1911 with a type locality given as Cochim, India. The specific name honours a Captain Block who was responsible for importing this fish into Germany.