Banded Killifish, Fundulus diaphanous





The banded killifish is a long and slender fish averaging 2 - 3 inches  in length.  The olive coloured back lightens down the sides to a cream belly.  The sides have 12 - 20 dark vertical bars.  Its head is triangular with a blunt snout and an upturned mouth.  The scales are smaller than the mummichog numbering 43 - 49, and its caudal fin is squared. Gill rakers usually 5, widely spaced and obvious; branchiostegal rays 6,6, never 5,5; distance from origin of dorsal to end of vertebral column, when stepped forward from dorsal fin origin, reaches a  point about middle ofeye.




Banded killifish are a schooling fish that occurs in the shallow areas of lakes and slow moving rivers.  It is commonly found in sandy areas with aquatic vegetation, and can tolerate slightly brackish waters. The banded killifish diet consist of aquatic insects, mollusks and vegetation.  The banded killifish spawns during the mid summer months, usually June - July, in shallow, weedy areas.  The eggs are released are highly adhesive attaching to the substrate and vegetation.  The spawning adults provide no parental care to the eggs or young.  The banded killifish is likely a significant food source for larger fishes and birds in waters where it is present, and anglers sometimesuse it as bait as it is readily available when present.

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