Common name: Australian Empire Gudgeon.
Species: Hypseleotris compressa.
Habitat: Australia & Papua New Guinea.
Potential size: 10cm.
Social behaviour: Ideal species for harder water aquariums. Hypseleotris compressa is not especially aggressive, although it will eat any fish small enough to fit into its mouth. Good tankmates include Rainbowfish & Livebearers.
Food: Flake, granules, frozen food, live food etc.