Abstract
Abstract Swim-up fry and fingerlings of Colorado squawfish (Ptychocheilus lucius) were successfully reared in earthen ponds at the Dexter, New Mexico, National Fish Hatchery. Swim-up fry (95,340–104,420/lb) were stocked in 0.89–0.98-acre ponds at the rate of 105,316–137,438 fry/acre; fingerling fish (980–1,088/lb) were stocked in 0.98–1.08-acre ponds at the rate of 52,978–55,424 fingerlings/acre. Ponds were treated initially with organic and inorganic fertilizers in addition to periodic applications of alfalfa pellets. Swim-up fry were supplementally fed a formulated trout feed. Survival ranged from 27.7 to 36.0% for swim-up fry and averaged 92.2% for fingerlings.
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