Fish
Black Bullhead
Ameiurus melas · also called black bullheads
A pond reduced to a warm, oxygen-starved puddle by late summer drought would spell doom for most fish, yet a black bullhead burrows into the soft mud and simply waits it out, one of the hardiest freshwater fish in North America.
Overview
The black bullhead, Ameiurus melas, is a remarkably tough, omnivorous catfish native to ponds, lakes, and slow-moving rivers across central and eastern North America. Its extraordinary tolerance for poor water quality, attentive parental care of schooling young, and successful spread well beyond its native range make it one of the more resilient and ecologically consequential small catfish on the continent.
Built to survive the worst water
While most fish need clean, oxygen-rich water to thrive, the black bullhead thrives precisely where conditions turn hostile, tolerating pollution, low oxygen, and even drought that would eliminate less hardy competitors.
Status
Least Concern — widespread and abundant across suitable habitat throughout central and eastern North America, with successful populations established elsewhere.
Black Bullhead: common questions
How tough is the black bullhead compared to other fish?
The black bullhead can survive in water with very low oxygen levels and considerable pollution that would kill most other fish species, and it can even burrow into soft mud and survive extended drought conditions, making it one of the hardiest freshwater fish found in North America.
How do you tell a black bullhead from a yellow or brown bullhead?
A yellow bullhead has notably pale, whitish or yellowish chin barbels, a feature that reliably distinguishes it from the black bullhead and brown bullhead, both of which have distinctly darker barbels, making barbel colour one of the more useful field marks for telling the three closely related species apart.
Do black bullhead parents actually protect their young?
Yes, newly hatched black bullhead young cluster into a dense, tightly coordinated schooling ball that a parent actively guards and shepherds through the water, a notably attentive level of parental care compared with many other fish species that simply abandon their eggs and young.
Why is the black bullhead considered invasive in some areas?
The species has been introduced far outside its original central and eastern North American range and has established itself successfully in parts of the western United States and elsewhere, where its remarkable hardiness and omnivorous diet let it outcompete native fish for food and space.