They're separated!
At the very last moment, I changed my mind and decided to move the more aggressive one into my 20L tank. That tank is just bustling with activity, and I thought that Apisto would fair better than one that's just been chased. Fortunately, the water temps were almost identical so I didn't have to do a lot of acclimation to move him.
He's swimming around, checking everything and everyone out. And they're checking him out, as well. My loaches are very curious little guys who sneak up from the back to inspect the new fish. They don't bite; they remind me of how dogs sniff the rear ends of other dogs; however, I think the loaches are just being crafty to check things out without having to confront the new fish.
I have a dominate female guppy who's the matriarch of the whole bunch. She's a large guppy, as well, larger than the Apisto. She slowly followed the Apisto around, very gently checking him out.
No aggression yet, but he's only been in there for a few minutes! I'll know more in a few days.
For now, the only issue I see any of the fish having is the Apisto has discovered his reflection. He seems to not know what to make of it!
