Difference in Lateral Line Morphology Between Hatchery- and Wild-Origin Steelhead

A comparison of hatchery fish (left) sensing capacity vs. wild fish (right) sensing capacity.

A new report explores the hypothesis that hatchery-reared juveniles might exhibit morphological defects in vulnerable mechanosensory systems prior to release from the hatchery, potentiating reduced survival after release.

As you might expect hatchery fish suck in the sensory department. 

LINK (via:The Wild Steelhead Coalition)