The golden redhorse and black bullhead have specific habitat preferences that are not evident in the above discussion.
The yellow bullhead is more restricted to streams than is the black bullhead.
The black bullhead was abundant at the upper stations on each river, especially in backwaters having mud-bottom.
The population in 1957 was strongly dominated by black bullhead and young-of-the-year channel catfish.
The black bullhead was taken at slightly more than half of the stations, and probably was present at others.