Fishing Ontario Canada


Distribution in the area:

Mayo Lake,


Etheostoma, from the Greek, etheo, "filter", and stoma, "mouth"
exile, from the Latin, "slim"
Common name, from its swimming behavior and its occurence in the state of Iowa.


Kingdom Animalia
Phylum Chordata, animals with a spinal chord
Subphylum Vertebrata, animals with a backbone
Superclass Osteichthyes, bony fishes
Class Actinopterygii, ray-finned and spiny rayed fishes
Subclass Neopterygii
Infraclass Teleostei
Superorder Acanthopterygii,
Order Perciformes, the perch-like fishes
Suborder Percoidei
Family Percidae, the true perches
Genus Etheostoma


A moderate-sized darter of clear, northern waters.





males bright green with dark brown blotches and small red spots
females grey brown without bright pigmentation
belly fading to yellow or gold and white
prominent black bar below the eye in both sexes


very slender
dorsal fin of 9-11 rays
anal fin of 7 rays
incomplete lateral line of about 60 scales
cheeks, opercles and nape scaled; the breast naked


somewhat "bug-eyed"


Small size and prominent, double dorsal fin distinguishes as a darter.
Male best distinguished from other darters by its bright coloration. Look for black eye bar in both sexes.


Clear, sluggishly vegetated streams and weedy portions of glacial lakes, marshes, and ponds.
Forest clearing and drainage practices have reduced its habitat and warmed the remaining waters enough to eliminate this species in the southern portions of its range. In the US it is now common only in non-agricultural areas.


Primarily midge larvae, mayfly larvae, and amphipods


Reproduction: Spawns in sandy areas or beneath stream banks in April and May.
Only a few eggs are laid in each spawning sequence.


Look for this one in the clear shallows at portage landings in Canoe Country.