Where has the Brown bullhead been recorded?

Ameiurus nebulosus occurrence evidence comes from 11,493 records in 19 countries and territories, from 1850 to 2026. Most records come from United States.

• 11,493 records
• 19 places
• 154 years recorded
• — class

Observation evidence passport

Compare this animal’s observation pattern

When it is recorded

Peak month: May. Records cluster in the months an animal is present and being looked for, so a summer peak can reflect observer effort as much as the animal.

Records over time

Recording effort has risen steeply almost everywhere since the 1990s, so a rising line usually shows more observers rather than more animals.

Where Brown bullhead has been recorded

The countries below show where occurrence evidence exists for Brown bullhead. They do not define a complete habitat range: survey effort differs by place, and historical or one-off records can appear alongside repeated presence.