So my mistake of not adding enough Yoyo loaches resulted in one picking on the other. I'v deiced to re-locate the bully to a tank where he will be better suited and see how that works out. Should i add more smaller ones to my tank once he's out (lets say 3-4) to school with the smaller one or leave her on her own?
What you can possibly do, is to add a few with your smaller loach and let them all group together. Once they seem settled, then add the bully to the group - he will then be the newbie and should be the underdog because there is more of the others even though they are smaller.