Thanks snowflake. I don't know and don't really want to found exactly how old they are, but they're nearing four months.
Truong, the parents both had good body shape but a couple of them are showing a short body. Definitely not something I will breed on and I will probably make sure whoever owns the extremely short bodied ones will not breed them (can you make no-breed contracts for fish? O.o), but they are cute in their own way. The dt I'm eying for breeding has awesome form and a nice long body, which is why I like him. The shortest bodied one is the girl (?) in the third picture but otherwise she looks great and I think she would make a nice addition to a sorority.