3. Forty-eight species of fish were obtained, and five others have been recorded in literature or found in museums. One species, Carpiodes forbesi, is recorded from Kansas for the first time.
4. Notropis lutrensis was the most abundant fish in the Big Blue River Basin, followed by Notropis deliciosus and Ictalurus punctatus. The most abundant sport-fishes were I. punctatus, I. melas, and Pylodictis olivaris, respectively.
5. The spawning behavior of Notropis lutrensis is described.
6. A creel census at major points of access to the Big Blue River, was taken in 1957 (below Tuttle Creek Dam) and in 1958 (above, in, and below the dam-site). Fishing pressure averaged one fisherman per 15.7 miles of shoreline. The average length of the fisherman-day averaged 2.2 hours, with an average of 0.33 fish per fisherman-day being caught in 1958. The average number of fish per man-hour in 1958 was 0.14 and 15.8 per cent of the fishermen were successful. Distances traveled in order to fish ranged from 0 to 197 miles (airline) and averaged 15.7 miles.
7. The primary recommendation is that studies be continued, to document changes that result from impoundment. Because brood-stock of the major sport-fishes is already present, stocking is unnecessary, except for walleye and northern pike. Also, I recommend commercial harvest of non-game food-fishes.
LITERATURE CITED
Bailey, R. M.
1956. A revised list of fishes of Iowa, with keys for identification. In Iowa Fish and Fishing, by J. R. Harlan and E. B. Speaker. Iowa State Cons. Comm., Des Moines, pp. 325-377.
——, and Cross, F. B.