Can you keep all male Rosy Barbs, no females

[jeweled fish]

I have a 55 gal planted tank. My Rosy Barbs multiply too fast. Can I keep only 6 males together with other fish like Oto's, Pleco, Rainbow shark and Yoyo loaches? I have 3 Yoyo's and they have gotten large. Would it work to have just 2 Yoyo's?:help:

[gm72]

2 Yoyos yes. That rainbow shark however, is going to get very territorial in a tank that size with other inhabitants. I think you could be in for a bad result. You could keep the 6 male rosy barbs, yes, but again I think your problem will be the shark.