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A male (left) and female (right) sockeye salmon spawning in the Adams River of British Columbia, Canada. There is a dramatic sexual dimorphism at maturity. [ 21 ] Males go through numerous morphological changes at maturation including, an increase in body depth, hump height, and snout length.
Sockeye salmon (Oncorhynchus nerka) Female (above) and male in mating condition. Note that the male has a kype, enlarged snout, humped back and deeper, more extensive colouration. Development of the kype often occurs in association with other seasonal changes.
The female then covers the eggs by disturbing the gravel at the upstream edge of the depression before moving on to make another redd. The female will make as many as seven redds before her supply of eggs is exhausted. [56] [57] Male pink salmon and some sockeye salmon develop pronounced humps just before they spawn.
These five are chum, sockeye, Chinook, Coho, and pink - with pink being the smallest and most abundant species and Chinook being the largest and least abundant, per the Pacific Salmon Foundation ...
Smashing records, sockeye salmon are booming up the Columbia River, in a run expected to top 700,000 fish before it’s over. But a punishing heat wave has made river temperatures so hot many may ...
Sockeye salmon stacked up off the mouth of the Okanogan River until it cooled down enough for them to resume migration. Six-fish limits were in vogue, but there was high probability of getting t ...
The female kokanee creates a nest called a redd. She will lay around 1,000 eggs, depending on food availability. Eggs hatch within 110 days, and the juveniles swim out to the lake. [20] [9] During spawning, the males turn bright red and develop a humped back and an elongated jaw similar to the male sockeye salmon.
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