Eh, I think a large hoplo or pictus would be fine, personally. Of course there are risks with any cichlid, but I kept fullgrown pictus with Oscars, severums, GT, even convicts before. I think an ornatus would get a bit large for a 75.
I think the rainbows would be fine, but the stocking sounds a little heavy for a 75 to me, with the GT, 3 pictus, large rhino pleco, and the rainbows. MIght cut out either the cats or the pleco.
I think the rainbows would be fine, but the stocking sounds a little heavy for a 75 to me, with the GT, 3 pictus, large rhino pleco, and the rainbows. MIght cut out either the cats or the pleco.