One-week-old brown trout eggs

One-week-old brown trout eggs

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Credit: SCIENCE PICTURES LIMITED/SCIENCE PHOTO LIBRARY

Caption: Brown trout eggs. Close-up of one-week-old eggs of the brown trout Salmo trutta on a river bed. The brown trout is a large edible fish related to salmon. Three types of brown trout exist, living in the lakes, rivers and oceans of Europe. All trout come to rivers to spawn. The yolk-rich eggs are laid in a pit excavated in the river bed by the female. A single female may lay up to 10,000 eggs. The male fertilizes the eggs with his milt (sperm) after the eggs are laid. Only a tiny proportion of the eggs will be fertilized, most will be washed out of the pit and eaten by other fish.

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Keywords: 1 week old, 1-week-old, animal, bony fish, brown, brown trout, egg, eggs, england, english, fauna, hertfordshire, nature, pisces, river mimram, salmo trutta, trout, uk, united kingdom, wildlife, worst invasive alien species, zoological, zoology

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