Will I Need To Rehome These ( Or Maybe Just 1)

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I've got these 2 sino's, there roughly 6-7 inches. They are living in a 120l x 70.5h x 40.5w tank. Can they live together, or is my tank big enough for just one of them. I posted in another part of the catfish forum and was directed here. Is my tank big enough for the both of them as i sometimes see them going nose to nose and chasing each other about the tank. This also seems to agitate the other tank mates.

This is a picture of one of them:

I really like them but if one needs rehoming (or both) i'll do it as i want the best welfare for my fish.

Thanks

sambangert