Okay - So have gotten one no on the rusties. I was not that set on them, just was the only smallish alternative I had seen recommended else where that was not blue or yellow. Any suggestions for alternatives?
Kind of figured that the Calvus would be challenging at the very least. If I was going to attempt it, I would probably get the calvus let them grow and "own" the tank, then buy smaller saulosi after a few months - don't think the 9 yo will have the patientce for that.
Any other suggestions?