Thanks for the input Brian.
Goes against my feeling as well for adding more of them.
Tiger Barbs are maybe 3cm...and cast net.....that's gonna be a monstrous task, bottom looks flat but there's levels, bumps, 2 big concrete disks...
On top of that, since they continuously follow Mr. T, I'd much likely have him netted as well...not really what I want to do.
Seems labyrinth fish are their natural enemies, but even that will be a lottery jackpot to get them to see the barbs or even chase/eat them.
I think I'll need to hurry building some PVC hiding spots for the Crystal Eye, hoping he'll get to them.
By no means Mr. T is in any danger, he's as fat as a cat I'd say so the extended swimming around burns off some for now.
But it's painful to see him so annoyed and looking at you like: "WTF is that?"