Semotilus atromaculatus (Mitchill). KU 2, 3, 5, 6, 7, 8, 10, 12, 13, 14; UMMZ 4, 5; DM 3, 9, 10, 11, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 29, 30, 31, 32, 33. The creek chub was usually abundant in small upland tributaries.
Hybopsis biguttata (Kirtland). KU 1, 3; UMMZ 4. The hornyhead chub seemingly was common in early collections but has not been found since 1924. The fish characteristically inhabits clear streams having gravel-bottom. Disappearance of the species from the Wakarusa may have resulted from increased siltation and intermittency of flow.
Hybopsis storeriana (Kirtland). KU 10; UMMZ 3.
Hybopsis aestivalis (Girard). KU 10; UMMZ 3; DM 1. This species and the preceding one are common in the Kansas River but do not ascend far up the Wakarusa. Hybopsis gelida (Girard) and Hybopsis gracilis (Richardson) occur in the Kansas River and may be expected in the lowermost portion of the mainstream of the Wakarusa.
Notropis percobromus (Cope). KU 12; DM 1, 2. The plains shiner shows little tendency to move far upstream from the Kansas River, where it is abundant.
Notropis umbratilis (Girard). KU 5, 11, 14; UMMZ 1, 4, 5; DM 9, 10, 11, 16, 17, 18, 21, 22, 23, 24, 25, 26, 29, 32, 33, 34, 35, 37, 38, 39, 41. In our survey the redfin shiner was the most abundant species at several stations, especially at those in the lower and middle portions of tributaries to the mainstream.
Notropis cornutus frontalis (Agassiz). KU 1, 2, 3, 8, 11, 14; DM 16. Judging from the numbers preserved in early collections, the common shiner was more abundant and widespread in the 1890's than in 1959. A watershed improvement program effecting more stable flow and decreased turbidity might benefit this shiner.
Notropis lutrensis (Baird and Girard). KU 1, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15; UMMZ 1, 2, 3, 4, 5; DM all stations except 5, 11, 12, 13, 14, 19, 35. The red shiner was ubiquitous, and was the dominant species at a majority of stations.
Notropis stramineus (Cope). KU 7, 8, 10, 11, 12, 13, 14, 15; DM 1, 2, 3, 4, 6, 7, 9, 10, 15, 16, 17, 24, 25, 31, 37. The sand shiner was most common in two environments: (1) near the mouth of the Wakarusa where abundance of the species may be attributed to the close proximity of a large population of N. stramineus in the Kansas River, and (2) in upland tributaries that drain areas in which sand is found (especially in Cole Creek).
Notropis topeka (Gilbert). KU 1, 14; UMMZ 1, 4, 5; DM 22, 25, 27, 33. Minckley and Cross (1959) describe the habitat of the Topeka shiner as pools of clear upland tributaries with slight flow. We found the Topeka shiner in such habitat in Deer Creek, Strowbridge Creek and Burys Creek. The largest population occurred in a tributary of Strowbridge Creek. This stream probably was intermittent in 1958, and Deer and Burys creeks may have been intermittent at some time in 1957-1959. Although Minckley and Cross (1959:215) have stated that Rock Creek is "unsuitable for this species," we suspect that Rock Creek served as a refugium for N. topeka in time of drought. It was found there (KU 14) in 1952, and again (DM 16) on April 8, 1960.