Im thinking of moving the shark into my 10 gallon, and try to keep the barbs here, my dad loves them. If the barbs start to nip the fins of the discus or angels i'll remove them.
One of my dicus cost 250 TBH (7.5 USD) and the other cost 80 TBH (2.4 USD)
Pretty cheap
So i think i will experiment with them.