Gasterosteidae

brook stickleback

Culaea inconstans

Stickleback beneath Mexican Waters

• Temperate
• Upper river
• Northern Hemisphere
• Regional distribution
• Freshwater fish
• Europe
• North America
• Fusiform
• Small
• Temperate fish

The brook stickleback (Culaea inconstans) is a small freshwater fish that is distributed across the US and Canada. It grows to a length of about 2 inches. It occupies the northern part of the eastern United States, as well as the southern half of Canada.