Michael Durham Photography

coho slamon alevin yolk-sac fry

A coho slamon (Oncorhynchus kisutch) alevin, or yolk-sac fry 10 days after hatching. Alevin remain in the redd after hatching and hide in the gravel and rocks, often working deeper into the substrate for protection. After they absorb the remaining nutrients from the yolk, they must leave the redd to find food.

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Filename: coho_slamon_alevin_yolk-sac_fry21607ALv2.jpg
Copyright: Michael Durham
Image Size: 5900x3933 / 5.0MB; www.DurmPhoto.com; MD Pictures Oncorhynchus kisutch alevin coho salmon endangered species fry gravel hatchling hide hiding nest redd river bed sac fry yolk-sac fry
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A coho slamon (Oncorhynchus kisutch) alevin, or yolk-sac fry 10 days after hatching. Alevin remain in the redd after hatching and hide in the gravel and rocks, often working deeper into the substrate for protection. After they absorb the remaining nutrients from the yolk, they must leave the redd to find food.