The ones I bought in Vancouver were erectus, and they were from a private breeder. He had at least a dozen tanks, and I think I found him on a thread on this board about 6 years ago. That was my first batch of seahorses ever, so I wanted to make sure they were truly captive bred and eating frozen (and coming from clean enough tanks). He had a batch born the day before we arrived, too - really neat to see
Alas, he has since gotten out of the hobby/business.
Thanks for the info.