Other names: -
The cui-ui, Chasmistes cujus, is a freshwater fish endemic to Pyramid Lake in Nevada, USA. Recognizable by its large mouth and unique body shape, it has faced significant population declines due to habitat alterations. This species is currently endangered and is known for its distinctive spawning behavior along the lake margins.
Other names
-
Length
~40" (max 64)
Weight
~1" (max 3)
Water
Fresh
Water Temp
9-17° F
Depth
46 ft
FliesSorry. Regulation data is empty
Cui-ui inhabit deep waters of Pyramid Lake, preferring cooler temperatures
They spawn in the shallower, rocky margins of the lake during spring
Their diet includes plankton, algae, and small invertebrates, making them filter feeders
Juveniles stay in protected areas before moving to deeper parts of the lake as they grow
Spawning occurs in spring when water temperatures rise, typically near the shore
Females release eggs that are fertilized by multiple males in rocky substrates
Larvae hatch and remain in shallow, protected waters until they mature
The species exhibits high site fidelity, with adults often returning to the same spawning grounds annually
