Found it here: http://www.dec.ny.gov/outdoor/33072.html
14. Can I use perch, sunfish, suckers or other angler caught fish as bait in the same water I caught them from? Yes. If the fish you caught by angling is in season, meets the minimum size limit, and is within your possession limit, you can use that fish for bait. That fish counts towards your possession limit even if it gets off the hook. Please note that perch, sunfish and most other angler caught fish cannot be collected by methods other than angling and cannot be sold as bait fish. The only species of fish that can be collected by methods other than angling and used as bait fish are minnows (except carp and goldfish), killifish, mudminnows, darters, sticklebacks, stonecats, smelt, alewives, suckers and blueback herring. Possession of endangered or threatened species is prohibited.