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A comparison was made of the incubation period and the dynamics of the hatching of the offspring of three groups of fish (brown trout, sea trout that had smoltified, sea trout that had not smoltified) that were reared under the same conditions and spawned on the same day. The length of the incubation period differed ranging from 304 to 376°D among the offspring of individual fish as well as among...
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