No Mack, they are a territorial species. I don't keep these, I think Graeme and Emma have these, hopefully they can give you some insight.
What way do you have the decor in your tank setup. Best way I have found with Schistura is to have many cobbles pilled up all over the tank, high and low, creating many barriers. I assume the same approach may help disperse aggression in one tank. One or two large bits of decor won't do-you need loads of it!
From what I have read, you had 5 in a 30g-They should get a long with a lot more barriers, you have a good number tho so that all aggression isnt towards one specific individual. Although as tank mates go (Harlequin Rasboras and 4 Red-Line rasboras), they are not ideal. I would only keep them with tough barbs, little rasboras don't really stand a chance.
This is one of my smaller tanks with cobbles, I have the same applied in a 4ft with slate as well, and it works surprisingly well, just to give you a few ideas. Very nice specimen you have there, it would be a pity not to keep them