They are not fished commercially and little is known about them.
The species is commercially fished, with 32,815 t landed in 2008.
However, their preferred prey are usually not commercially fished species.
Historically, the river has been home to sturgeon, who were fished commercially in the early 1900s.
The species is commercially fished, with 10,014 t landed in 1999.
Those who have not fished commercially in the past 12 months are invited to try their luck over a weekend.
Several species are fished commercially and processed into fish meal.
It is commercially fished, with 3,713 t taken in 2008.
The family has fished commercially in the Hudson since 1870, his father said.
They are commercially fished in many areas of the northwestern Pacific.