The chalk Goby has a white body with bright blue spots under the eyes and mouth.
it should be housed in a 30 gallon or larger aquarium with sand as the substrate.
It will rarely become aggressive towards other fish but it can be territorial, and will fight with its own kind unless they are a mated pair.
they feed off the bottom as it sifts through the sand eating mouthfuls of substrate and the food that lives within the sand.
Their diet should include a variety of live frozen brine shrimp mysis shrimp.