A horned pout or catfish, especially a brown bullhead catfish found in North American waters.
From 'bull' (large, aggressive) + 'pout' (possibly imitating the fish's mouth shape or behavior). Regional North American term dating to colonial times for bottom-feeding catfish.
Bullpouts have venomous spines on their fins and will thrash violently when caught—early American colonists learned to handle them carefully, and the 'bull' name reflects their aggressive nature.
Complete word intelligence in one call. Free tier — 50 lookups/day.