I disagree, crappie that are over 1 lb are large enough, and have large enough mouths to eat a 10"-12" shiner (which will be rare anyway). Actually, in all the years that we have performed surveys on lakes and ponds that had shiner populations, we've NEVER seen one over 10". We even sampled one pond where shiners and large bass were they only thing present...not even fingerling bass were found. Shiners can be stocked at 2"-3" in length and, as long as shoreline and submerged vegetation is not out of control, should eat significant numbers of crappie fry early in the year when food can be scarce.