its tiny!!!! you really won't be able to sex it for sure until its a little bigger. juvie males will exhibit female traits for a time. when i first got my three, i though the male was a female due to shwing the the diamonds down the back. turns out, he had been in an all male tank and just wasnt top lizard so he didn't exhibit the male traits. three days of being with my girls and he turned green, the diamonds were barely noticeable, and i could see how his head was bigger than the girls. eventually he "flared" for the ladies (i love when he does that, its the coolest thing to see).
since this one is a wild one, you may want to hold off a bit before you get more. one to let it grow so it can compete for food with the new ones, but also to be sure it didn't bring any nasties with it, a little quarantine and grow out time.
enjoy your little one!!!!!