- Kingdom: Animalia
- Phylum: Chordata
- Subphylum: Vertebrata
- Superclass: Gnathostomata
- Class: Actinopterygii
- Order: Perciformes
- Family: Gobiidae
- Scientific name: Thorogobius ephippiatus
- Norwegian: rødflekket kutling
The large, dark blotches on grey, brown or silver blue background gives it a characteristic look that can hardly be confused with any of the other gobies found in Norwegian waters. Another unique feature is the blue-edged fins. It can reach a body length of 13 cm.
The leopard-spotted goby is usually found in sandy substrate, under crevices or rocks. It is most frequent on depths between 5 and 20 meters.
This species was first registered in southern parts of Norway around 1980, but is rapidly spreading further north. Elsewhere it is registered around the British Isles and along the Atlantic coasts as far south as Madeira. There are also registrations from the Mediterranean.