Fundulidae

Blackspotted topminnow

Fundulus olivaceus

Fish Reaching Eight Centimeters in Mexican Waters

• Black
• Temperate
• Northern Hemisphere
• Regional distribution
• Freshwater fish
• North America
• West Asia
• Small
• Temperate fish

The blackspotted topminnow, Fundulus olivaceus, is a species of fish in the family Fundulidae: the topminnows and North American killifishes. It is native to the south-central United States, where it is known from the drainages of the Mississippi River from Illinois to the Gulf of Mexico and as far west as Galveston Bay. This species lives in clear streams with fast currents and sand or gravel substrates.