Aplocheilus blockii or the green panchax is a species of fish native to waters around India, Sri Lanka, and Pakistan.

Aplocheilus blockii measures 6 centimeters long.

[3] It feeds on larvae, insects, and fish fry.

[4] This species was described by the German aquarist Johann Paul Arnold [de] in 1911 with a type locality given as Cochim, India.

[5] The specific name honours a Captain Block who was responsible for importing this fish into Germany.