Satinfin shiners (Notropis analostanus) proved to be fractional spawners and pairs of them in outdoor wading pools spawned up to 11 times between June 3 and August 11, 1977 (totals 381 to 3,268 eggs per pair). They released from 6 to 634 eggs per fish per session at intervals of 3 to 31 days (mean 7.6 days; modes 5 and 8 days). Spawning behavior was similar to that of spotfin shiner (Notropis spilopterus). Overall, eggs averaged 1.5 mm in diameter. Significant differences (P < 0.001) were found in the size of eggs spawned by different females. Eggs in the first spawn were significantly (P < 0.001) larger than those in the last spawn. Spawning occurred during the day and activity was most intense between 0600 and 1000 h. Only 12.2% of 7,290 eggs were spawned after 1200 h.