Biology of the Fallfish, Semotilus corporalis (Pisces, Cyprinidae)
- 1 October 1971
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 100 (4) , 717-725
- https://doi.org/10.1577/1548-8659(1971)100<717:botfsc>2.0.co;2
Abstract
The biology of fallfish, Semotilus corporalis, was studied in Massachusetts. Back calculated age and growth data from eight different populations are compared. The computed TL-SR equation is L = 18.00 + 1.010 S. Fish from the Quabbin Reservoir attained a maximum age of X+. Males attained sexual maturity when III+, females at IV+. Spawning occurred from late April to June when the water temperature reached 14.4 C. Unfertilized egg diameter is 2.16 ± .09 mm and the water hardened egg diameter 2.70 ± .07 mm. Eggs hatched 138–144 hours after fertilization in a constant water bath of 17.0 ± 0.5 C. Newly hatched larvae are 6.82 ± .32 mm TL. Early larval development and scale formation are described. The fecundity-weight relationship is F = 159.1 + 26.4 W. Fallfish are omnivorous based on stomach content (algae, fish, aquatic and terrestrial insects, and crayfish).Keywords
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