- Kingdom: Animalia
- Phylum: Chordata
- Subphylum: Vertebrata
- Superclass: Gnathostomata
- Class: Actinopterygii
- Order: Scorpaeniformes
- Family: Cottidae
- Scientific name: Myoxocephalus scorpius
- Norwegian: vanlig ulke
This is a large scorpion fish, reaching a length of 60 cm in some cases. The coloration varies too much to be used as identification. It has two distinct spines on the gill cover and a number of smaller spines along the lateral line. The fact that it lacks barbells in the corner of the mouth, can be used to distinguish the bull rout from many of the other scorpion fish. The head is wide, compared to the body.
The bull rout is hunting and resting on sandy or rocky substrate. It is most common above 30 meters, but has been reported as deep as 250 meters.
It is found on both sides of the North Atlantic Ocean, from southern Greenland and St. Lawrence to New Jersey in the west and from Iceland and Norway to the Bay of Biscay in the east.