Appearance''A. periophthalma'' is a small fish which can be up to 8 centimetres . Its body is lengthened and cylindrical.The background coloration is whitish and banded with large brown stripes whose color intensity varies from an individual to another. A multitude of small brownish dots are distributed mainly on the superior part of the body. Eyes are round and prominent. The mouth is big and in the shape of an inverted "U".
Behavior''A. periophthalma'' lives in symbiosis with alpheid shrimps in burrows. The shrimps dig and maintain the burrows which are the dens for both animals. The goby is like a watchman that warns in case of potential danger which benefits the shrimp because it has poor vision.
Habitat''A. periophthalma'' can be found on sandy substrates in lagoons or on external reef slopes at depths of from 3 to 35 metres , though mostly between 10 to 20 m .
Food''A. periophthalma'' has a carnivorous diet and usually eats small crustaceans or small fishes passing close to its burrow.
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