Trout species chart

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The rainbow trout (Oncorhynchus mykiss) is a species of trout native to cold-water tributaries of the Pacific Ocean in Asia and North America. Adult freshwater stream rainbow trout average between 0.5 and 2.5 kilograms, while lake-dwelling and anadromous forms may reach 9 kg. Coloration varies widely based on subspecies, forms, and habitat. Adult fish are distinguished by a broad reddish stripe along the lateral line, from gills to the tail, which is most vivid in breeding males.

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