From my article of single sex crappie stocking in Pond Boss magazine, Crappie both white and black are much harder to accurately sex using visual features compared to bluegill. The ONLY way for my pond or anyone else's pond that I would try to sex crappie is to either see white milt oozing from the males and also use a capillary probe for actually seeing eggs of the females. Cecil Baird has previously discussed the method for using the capillary tube probing technique. Otherwise you are guessing & assuming and almost everyone knows how reliable that is; poor at best.
Reference.
Pond Boss Magazine Mar-Apr 2013. CRAPPIE AS A BONUS, PLUS GROWTH RATES AND SEXING. Bill Cody explores single sex crappies for small ponds. How to have some big crappies without problems of reproduction, how to recognize males and females, choosing white versus blacks and numerous facts about crappie biology to help you grow big crappies.
Last edited by Bill Cody; 01/07/16 04:41 PM.
