I think the more usual common name is Rhino-horn Goby. They are usually
found in estuarine tropical areas and are found in Northern Australia and
SE asia - they do better in very hard water or with some added salt and are
very peaceful, attractive and breedable with the right starter food for the
fry. All members of the genus are good aquarium subjects as far as i know
and do well in small groups as well as brackish communities of smaller fish