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Wild About Illinois Fishes!
Family Fundulidae - Topminnow Family
Family: Fundulidae - Often found swimming near the surface, these fishes are easy to observe. Topminnows are small fishes with large eyes, a flattened head and back, upturned mouth, one dorsal fin far back on the body and no lateral line.
northern studfish (Fundulus catenatus)
banded killifish (Fundulus diaphanus) [state threatened]
starhead topminnow (Fundulus dispar) [state threatened]
blackstripe topminnow (Fundulus notatus)
blackspotted topminnow (Fundulus olivaceus)