Mixed Strain

Mixed strain Atlantic salmon are Salmo salar with ancestry from more than one hatchery line, river-origin stock, family group, or selected aquaculture strain. Strain language in salmon usually describes breeding program history rather than an external breed. Mixed strain groups may be produced to combine growth rate, delayed maturation, sea-water performance, disease resistance, or locally adapted traits, depending on the program and regulations.

The label is most relevant to aquaculture operators, researchers, conservation hatcheries, and regulators. Managers need records of broodstock, generation, cross, ploidy if relevant, vaccination, health screening, and site transfers. Atlantic salmon husbandry changes across life stages, from freshwater eggs and parr to smolts and marine grow-out, so strain records can affect comparisons of survival and performance. Mixed strain fish should be kept distinct in data systems when they are part of trials or brood programs. Escape prevention and biosecurity are especially important where farmed and wild salmon populations may interact.

Colors: Albino, Black, Blue, Brown, Gold, Gray, Green, Leucistic, Melanistic, Mottled, Orange, Piebald, Red, Silver, Spotted, Striped, White, Wild Type, Yellow