Abstract
Abstract Razorback sucker (Xyrauchen texanus) swim-up fry and fingerlings were successfully reared in earthen ponds at the Dexter, New Mexico, National Fish Hatchery. Swim-up fry (71,000/lb) were stocked in 0.34-1.08-acre ponds at the rate of 101,000-109,000 fry/acre; subfingerling fish (724/lb) were stocked in 0.86-0.98-acre ponds at the rate of 51,000-58,000 fingerlings/acre; fingerling fish (158/lb) were stocked in 0.98-acre ponds at the rate of 26,000-27,000 fingerlings/acre. Ponds were treated initially with organic and inorganic fertilizers, in addition to periodic addition of alfalfa pellets. The swim-up fry were supplementally fed a formulated trout feed. Survival ranged from 87.8 to 98.6% for swim-up fry and 92.7 to 95.8% for subfingerlings and averaged 96.2% for fingerlings.
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