wow, 1 out of 18
Did you expect to have only have 1 left or did you build the tank to house more than 1?
He is going to be really big. 24" sounds cool.
Well, I bought the batches in groups of six. Raised the first batch - all females

, raised the second batch, all females

, then I decided for my third and final batch, regardless if I did not get a male - low and behold, I got lucky with one

!!
I built the tank for one pair.