Unfortunately he doesn't. I asked.
I figured you'd want them too but if I'm keeping fish with Aros then I need the bigger ones, whereas you can keep accumulating the small guys (and then profit a bit from thinning the herd as they grow!)... seems fair
He has some other large geos - proximus alenquer - but I have no idea what those actually look like. Can't find any photos.
Decent plan about the silver dollars. If I could find them, a few dozen marble hatchets could occupy the top area too. That way I could also keep the dwarf cichlids in there and tetras, both of which would be out if I had the arowana with them.
That said, I like the idea of keeping all the SA fish together. As long as the eartheaters are large, I can keep them with the blacks, and maybe add a ray or two - even if it's just a teacup. Obviously I'm keeping a few SA fish in with my eastern hemisphere guys now so I'm not 100% geographically correct, but it still seems a bit odd to me to have rays at the bottom and aros at the top with a bunch of African river fish and indonesian dats in the middle.
BTW I think some people skipped the link to the stock list - the large fish stocking is already done. I already own the 3 12" black aros and several distichoduses and dats. So I'm not looking to add PBass to the mix.