As Ryan has mentioned, I bought a bunch off him a couple of years ago and have added a few more along the way. From what I have seen, all the Dems in NZ are the Pombo rocks variant.
I try and sell them to members on these forums or TradeMe and sometimes I offload them at the local pet shops if I have too many.
Thanks Ryan. With the setup I've been running, I get a very high survival rate so the fry tanks are indeed becoming very crowded!
My breeding Dems are in my 6 foot display tank. There are 4 males and about 10 females which spit, on average, about 20-30 fry. They breed almost monthly so the fry numbers can add up pretty quickly.