I have what I believe are a couple of young carpinte "escondido" around 2". I have read some of the bigger texas/carpinte threads on here and i did not find a lot of information on sexing them. I have heard some stuff about a black spot on the dorsal fin, the shape of their tubes when they drop, and the shape of the dorsal fin. Can someone elaborate on this? How big do they have to be to see the signs?