Brook Silverside

Labidesthes sicculus
Family: 
Atherinidae (silversides) in the order Atheriniformes (silversides and allies)
Description: 

Slender, translucent fish with a silvery lateral band along the sides. Silversides have two dorsal fins; long, pointed, "beaklike" snouts; and relatively large mouths. The back of this species is pale greenish-yellow with silvery reflections; the scales are faintly outlined by black specks. Sides are silvery, with a bright silvery frontal stripe. Belly is silvery-white. Spinous (first) dorsal fin has a narrow, dusky tip; otherwise fins are plain.

Size: 
Total length: 2 1/2 to 4 inches.
Habitat and conservation: 
Prefers clear, warm water with no noticeable current, such as backwaters and overflow pools of large streams. Remains near the surface, never descending more than a few feet. In lakes and reservoirs, typically occurs in coves and along the shore. Second in abundance only to the mosquitofish in standing waters of the Bootheel lowlands.
Foods: 
Young eat microcrustaceans. Adults eat insects.
Distribution in Missouri: 
Nearly statewide; not found in the northwest, the Kansas City region and the north-central parts of the state.
Life cycle: 
Spawns from late spring to summer. Eggs attach to vegetation or other substrate by a long filament. Activity regulated by light intensity; very active in daytime and on moon-bright nights; motionless in the dark.
Human connections: 
Fun to watch. They can be seen leaping out of the water over and over again, especially on moonlit nights. They will follow a flashlight beam shone onto the water at night.
Ecosystem connections: 
Controls microcrustaceans and aquatic insects.
Shortened URL
http://mdc.mo.gov/node/4362