What does the streamlined, torpedo-like body shape of Merlangius species facilitate?

Efficient movement necessary for chasing mobile prey

The physical form of true *Merlangius* species, described as streamlined and torpedo-like, is an adaptation deeply intertwined with their ecological niche within the water column. This particular body morphology is optimized for efficient movement and high maneuverability through the water. This capability is necessary because these fish primarily target mobile prey items such as small fish and various crustaceans, requiring speed and agility to secure a meal. The silvery coloration further supports this active hunting strategy in well-lit zones where speed and camouflage are prioritized over the robust structure needed by bottom-dwelling relatives that forage in turbid environments or sift through sand.