Can this fish mix up?

  • We are currently upgrading MFK. thanks! -neo
There is no certainty. If they're still young, you can still move them out while you have a chance.
 
I agree, you will be very overstocked, I would plan onm getting a bigger tank or giving some of them up.
 
i also had 120G tank with 1 asian arowana, 1 florida gar, 4 red malaysian mahseer (size 2inch-4inch), 2 Buttikoferi (still Baby), 3 red crayfish, 2 marbel catfish(still baby), 2 bala shark (size 2-3 inch), 2 red-tail shark (2-3inch), 1 albino senegalus birchir and 1 palmas birchir..is it ok for the setup?
 
MonsterFishKeepers.com