Come pay me a visit, or send me a text mate. Ill send you in the right direction. Yes you can tell them apart, from my observations, males tend to only grow to round 2 to 3kg, that ive caught anyways, and they got two cocks which they ahhh, you no the rest dad. Anyhow, id almost guarantee, that a good 90 to 95% of your lemon capture will be females. What have other lemon wranglers observed??