The red colour of the muscle flesh of the sockeye salmon (Oncorhynchus nerka) is due to the presence of two carotenoid pigments both of which have properties similar to those of astacin. Two red pigments were also found in the red muscle flesh of the steelhead salmon (Salmo gairdneri).
No takes yet. Share an insight, caveat, or question.
B. E. Bailey (1937) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: