The Bermuda killifish (Fundulus bermudae) is a small fish which is endemic to the islands of Bermuda in the western Atlantic Ocean. It belongs to the genus Fundulus in the Fundulidae family of killifish and topminnows.It can grow up to 12.9 centimetres in length and 21.4 grams in weight. The male is dark green with a yellow underside and a dark spot on the dorsal fin when spawning.