Iowa DNR
BioNet
River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments

Spotted Sucker Minytrema melanops

Family
Catostomidae (Suckers)
Tolerance
Intermediate
Trophic Class
Benthic Invertivore
Is Exotic to Iowa?
False
Is Lithophilous Spawner?
False
Is Hybrid?
False
State Listing Status
Not Listed
Assessment Program Statistics

This species was found at 1 bioassessment site, 0 rapid fish bioassessment sites, 3 fisheries assessment sites, and 0 fisheries presence-only assessment sites. In total, it was collected at 4 distinct sites, or 0.3% of the 1513 total sites monitored by the bioassessment program. It is the 116th most commonly collected species.

The Spotted Sucker was collected in 1 bioassessment sampling session and 3 fisheries assessment sessions. It was present in 0 rapid bioassessment sessions and 0 presence-only sessions.

The biological assessment program has collected a total of 19 individual Spotted Sucker specimens, ranking it the #116 most collected fish.

Species Characteristics

A chunky and round-bodied, coarse-scaled fish with a dark, olive-brown back, coppery-green sides and a gray-silver belly. The scales are large with a squarish dark spot at the base, which forms several lengthwise streaks along the body. These parallel stripes set it apart from the other suckers. Its mouth is subterminal and horizontal with the rear margin of the lower lip forming a V-shape. The lateral line is incomplete with 42 to 46 scales. A short, concave-shaped dorsal fin has 11 to 12 rays. Breeding males have two dark stripes separated by a pinkish band along the mid-side and tubercules on the snout, about the head and anal fin. Adults commonly are 10- to 16-inches long and weigh from one-half to 2-pounds.

Species Distribution Maps

HUC12 watersheds where this species has been found