The fish can tolerate water temperatures of  or higher, a useful ability in the summer when the river becomes intermittent and the fish must crowd into isolated pools. They prefer clear, cool, relatively swift streams with scattered pools, and often will use shear zones between low and high current velocities.
Certain species of fish can withstand water temperatures of  or higher, which is advantageous during the summer months when the river becomes fragmented and the fish must gather in isolated areas. They tend to thrive in clear, cool, and moderately swift streams with scattered pools, and will sometimes use transitional zones between low and high current velocities.