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European eel
A remarkable migratory fish that reproduces in the Sargasso Sea.
Oncorhynchus mykiss
Русское название: Форель радужная
Native to the Pacific drainage of North America and widespread in aquaculture. Introduced fish can compete with native species. Some populations migrate to the sea; management differs by region.

Native to North America; widely farmed and introduced
Cool freshwater; some life histories migrate to sea
Images and brief descriptions are for learning, not for reliably identifying a specimen. Take particular care with poisonous plants and mushrooms.
Identification is never guaranteed by a photo. Scientific names are used to reduce confusion between local names.