Identification
Breeding males show blue square-like patches along the sides, orange markings on fin rays and a pointed snout. The upper lip usually has a narrow connecting fold. The combination distinguishes Blueside Darter from similar members of the Speckled Darter group.
Size and Weight
A field-guide summary reports 6.8 cm total length, about 2.7 inches. A later taxonomic review examined a male of 64.6 mm standard length and a female of 56.1 mm standard length, about 2.5 and 2.2 inches without the tail. These different measurement types cannot be ranked as if they were identical; the study specimens would be longer with the tail included. No dependable maximum individual weight was verified.
Habitat and Reproduction
Occupied streams include gravelly riffles and shoals as well as quieter sand-and-gravel areas below riffles. Eggs are deposited in the substrate during spring spawning. A species-specific diet breakdown and angling bait recommendation were not verified in the material used for this page.
A Role in Conservation
Conservation breeders used Blueside Darter to develop spawning and tagging methods before applying that experience to Bluemask Darter. Work began with Blueside Darters in 2014. This practical role depended on their relationship, but it does not mean the two species have identical requirements.
Color That Changes the First Impression
The breeding pattern makes an otherwise small stream fish conspicuous at close range. Side patches and fin markings need to be considered together; a distant impression of a blue stripe is not enough for certain identification.
All Lakes With Blueside Darter
Browse all lakes and reservoirs with confirmed Blueside Darter records in our database, listed alphabetically.
No published lakes are currently linked to this species in our confirmed records.