Nonnative: Clown Knifefish

Clown Knifefish - Notopterus chitala

Description: Very distinct, flat, silvery fish with long anal fin that gives the knifefish its common name; tiny dorsal fin and 5-10 black spots ringed with white distinguish it from all other fish in Florida; juveniles possess dark vertical bands instead of spots; long anal fin equally allows for forward and backward movements.

Range: Currently only found in Lakes Osborne, Ida, and their associated canals in southeast Florida. Native to tropical Asia--Indochina and Thailand.

Habitat: Lakes, swamps, and river backwaters; young fish occur in schools among aquatic plants and submerged roots; adults tend to be loaners commonly found near shore in areas with overhanging vegetation or docks; utilizes air to survive in warm, stagnant waters with little oxygen.

Spawning Habitats: Reportedly spawning takes place in spring when females each lay thousands of eggs on the substrate or piece of wood; male cares for the eggs by fanning them with his tail, keeping them aerated and silt-free; later male reportedly protects hatched fry.

Feeding Habits: Feeds on a variety of prey including small fish, insects, and grass shrimp.

Age and Growth: Largest specimen documented in Florida was a 31-inch specimen weighing just under 10 pounds.

Sporting Quality: Limited, but its unique appearance and jumping skills make for an exciting catch.

Edibility: Bony, but commercially important in native range; flesh minced, made into balls, and cooked with curry.

State Record: N/A

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