Per Roundy and Snipe - I strongly recommend absolutely verifying species ID prior to stocking into fishery. Not worth cutting any corners here - it's the most critical stage of fishery development. Purchase from reputable hatchery and STILL hand sort prior to stocking. That's the advice I give all my clients...also, do not stock Rusty Crays, adults get so large they're largely invulnerable to predation and can denude a pond of all vegetation as a result of their dense adult population. They are invasive, and if found in your fishery could be subject to some bad legal mojo....highly unlikely, but still worth consideration.