Nuchequula gerreoides, commonly known as the longspine ponyfish, is a species of marine ray-finned fish, a ponyfish from the family Leiognathidae. It is a fish of brackish and sea waters which is found in the Indian and western Pacific Oceans.

Description Nuchequula gerreoides are typically silver with long spines running along their back and stomach. Some fish may also be brown or gray with either yellow or blue spots on their bodies. The max length a Nuchequula gerreoide can grow is 12.5 centimeters.

Environment Nuchequula gerreoides live in coastal waters in a depth of 10 to 30 meters. They are commonly found in estuaries, which is where the tide of the river meets the sea. Nuchequula gerreoides are demersal fish, which means that they normally live close to the floor in seas or lakes. They periodically migrate from salt water to fresh water, this is a process called amphidromous. Generally, fish that do this migrate for breeding purposes, but the cause of their migration is unknown.