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Show FISH PRODUCE MANY EGGS; Scientific Count Shows Perch 10.21 Inches Long Contained 30,480 More in Small Than Large. Information concerning the number! of eggs produced by various species oUi fish has been limited mainly to ratherj rough estimates. j According to the Allgeraelne FIsch-" erei-Zeitung, some careful counts were1 made last year at the Bavarian trouti hatchery. The first Investigations were! In connection with common trout and! rainbow trout ; 58 specimens of thai former and 54 of the latter were! stripped, and the ova counted. The; older and heavier fish were found tol have the most eggs (ranging "up to, about 3,000), but the younger flsl. yielded a decidedly larger number of eggs in proportion to the weight oI the fish. ., The experiments were repeated wlth perch (Pcrca fluvlatills), in this easel the females just about to spawn being killed, and the ovaries being removed and dissected. The number of eggs lri perch ranged from 3,710 for a fish four inches long up to 30.4S0 for one 10.2 inches long; but in this species, also, the number of eggs per unit weight of fish Is much larger In small than In large fish. Scientific American. |