My daughter has a female crestie , she turned 1 yr old last May . My daughter would like to add another but I am concerned that they may not get along . I was thinking of getting an older one to be sure it is also a female . It this possible to add another and have them live together in the same tank ? Right now Stickey is in a 30 gallon tank with lots of climbing branches and foliage so there would be enough room for 1 more , I can even add a second hide on the other side of the tank if necessary .
Females can live up to 3 together without any issues. It's when you add a male that you can expect eggs and babies. So don't see any issue, can't you tell after they're about 2 years old when it's a male, as their testicles show quite prominently.