Fundulus similis
(Baird and Girard 1853)
Family Fundulidae

Lateral view of longnose killifish
The photo above shows a male, top, and female, bottom, longnose killifish. These fish are now part of the Florida Museum ichthyology collection, UF 236254. Florida Museum photo by Zachary Randall

The longnose killifish is a member of the topminnow family. It has a long, pointed snout, and a terminal mouth that is on a horizontal level lower than the eye. Both sexes are silvery with between 10 and 20 narrow black bars along the side. Breeding males have dusky to jet-black fins, a yellow snout and an ocellus at the rear of the dorsal fin. There is a light gray or yellow area in the center of the caudal fin. The longnose killifish is a marine species that enters tidally influenced canals, creeks, small rivers and roadside ditches.

Status & distribution

  • Status — Marine invader
  • Florida Distribution — Western and North Central drainages, the Gulf Coast and South Florida
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