Your tank is way overstocked for a 60 gallon, I would not add anymore fish.
The red devil can grow up to 1 feet long and would need 125 gallons or more, the clown loaches also grow pretty big and they need to be in a school of 6+ and would need at least 150 gallons for this to even be possible. If your large pleco is a common pleco, it'll grow to be about 20" or so, also needs a large pond or a 180+ gallon tank.
Texas is the biggest one at about 7inch thinking about removing some but I think that will make them fight like they were before I put the flower horn hybrids in. The biggest bully in the tank is the Mayan false red terror, but the flower horn keeps him in check.
Flower horns are too aggressive and should be kept in a separate tank. You do realize that your fish are probably not at full size yet, or probably have had their growth stunted by being in a 60 gallon.
I'm always seeing very large plecos in smaller tanks at the fish store, which is probably a past owners mistake. Anyway I've gotten different opinions on it, thanks for yours. I'll end up removing a few before I can upgrade.
I don't think a 125 will be enough for all those fish. I would try to rehome a few, probably starting with the common pleco as these grow very large. Once they are pretty big, it can be hard to rehome them.