Nothing rare for me. Only stores around are petco and petsmart. I had a scomb back home though, pretty rare for the chicago area. The store I worked at only saw two the entire year I worked there.
i have a paratilapia polleni female at about 8 inches now, and you don't see them in the hobby very often. they are nearing extinction in the wild, i've read.
i have a spotted snake eel, depending where your from they could be rare here its the first ive ever seen and i snatched it up also my kigoma frontosas very hard o come by up here in my area