Biology
The species often forms schools of variable sizes ranging from a few individuals to several hundred. The species is also highly migratory, and biochemical studies on the species have shown that the muscles contain unusually high levels of a fatty acid called DHA. The reason for this is probably that the muscle is also low in lipids due to accumulation of these in other organs. Other migratory fishes such as tuna also have this adaptation, suggesting it is a convergent trait.
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