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The Bullhead, or Bullhead Catfish, is a group of catfishes in the family Ictaluridae. Some other members of the family include channel catfish , blue catfish , and more. Researchers currently recognize seven different species in this group.
The brown bullhead (Ameiurus nebulosus) is a fish of the family Ictaluridae that is widely distributed in North America. It is a species of bullhead catfish and is similar to the black bullhead (Ameiurus melas) and yellow bullhead (Ameiurus natalis).
bullhead. 1. vb. [Drilling] To forcibly pump fluids into a formation, usually formation fluids that have entered the wellbore during a well control event. Though bullheading is intrinsically risky, it is performed if the formation fluids are suspected to contain hydrogen sulfide gas to prevent the toxic gas from reaching the surface.
Bullhead, any of several North American freshwater catfishes of the genus Ameiurus (Ictalurus of some authorities) and the family Ictaluridae. Bullheads are related to the channel catfish (I. punctatus) and other large North American species but have squared, rather than forked, tails and are.
A small, strangely shaped fish, the bullhead (also known as the 'Miller's Thumb') has a very large head, relatively large fins and a tapering body. It lives on the bottom of fast, stony rivers and streams feeding on invertebrates, such as mayfly and caddisfly larvae, and the eggs of other fish.
Bullhead shark, any of 11 species, known for having a broad head, small mouth, and short snout, that make up the genus Heterodontus. Sharks of this exclusively marine group live in the tropical reaches of the Pacific and Indian oceans.
Bullhead fish: what they are, what they look like - and how males entice females by singing - Discover Wildlife.
