Stenogobius is a genus of small gobies (family Gobiidae) distributed broadly across the Indo-Pacific - the atlas records it from Indonesia, the Philippines, Malaysia, Papua New Guinea, Australia, India, and Sri Lanka. Like many gobies of estuaries and lower river reaches, it is a small, bottom-dwelling fish with the fused pelvic-fin disc typical of the family, usually found over sand or silt in brackish-to-freshwater transition zones near river mouths. Atlas species run about 3 in.
This is a genus of ecological and taxonomic interest rather than an aquarium staple - it is rarely if ever kept in the hobby, and detailed natural-history accounts of its diet and breeding behaviour are sparse in the sources available here. Conservation status is entirely unassessed, matching the brief's tally of 3 Not Evaluated.