Collections of spottail shiners, Notropsis hudsonius, and other forage fishes were made by systematic seining in Clear Lake in 1961. Spottails made up 71.6 per cent of all forage species and were collected most frequently in areas of vegetation. Although most spawning occurred in late May and early June, a few spottails apparently spawned in August. Young spottails grew an average of 0.05 millimeters per day which is slower than in warmer years. No parasites of spottails were observed. Tadpole madtoms, Noturus gyrinus, made up 18.4 per cent of all forage species collected, higher than any previous year. All species studied fed primarily on Cladocera and vegetable material until mid-summer when insect material became abundant. After this, insects made up the major part of the diet.
Proceedings of the Iowa Academy of Science
© Copyright 1963 by the Iowa Academy of Science, Inc.
Griswold, Bernard L.
"Food and Growth of Spottail Shiners and Other Forage Fishes of Clear Lake, lowa,"
Proceedings of the Iowa Academy of Science: Vol. 70:
, Article 44.
Available at: https://scholarworks.uni.edu/pias/vol70/iss1/44