The rainbow trout is one of the most well-known and widespread fish in the world, adaptable to different environments thanks to its versatility. Originating from the North Pacific, this species has been the subject of numerous relocations and restockings. According to the specialized magazine National Geographic Spain, its adaptability is such that in many places it is considered native, although its arrival is recent and, according to various ecological studies, it has had an impact on native species, modifying the trophic balance and favoring the spread of specific diseases. The scientific name Oncorhynchus mykiss reflects its natural history and its journey through taxonomy. The genus Oncorhynchus, which means "hooked snout," refers to the curved shape that the males' jaw takes during the breeding season, while mykiss comes from a word from the Russian Far East, where the species was described in the 18th century. It was previously called Salmo mykiss, but advances in ...