Is my P's jaw okay

[m_sol]

 

[m_sol]

I spotted the difference when he was staring at me this morning. Very minor but noticed a visible line on the left part of his jaw. Still eats, recently moved him into a bucket and back into the tank ( added flooring ) he tore up the net. Hoping that didn't hurt him. Thanks in advanced

 

[Milingu]

Looks like he bumped into something. Could also be from abrasion/ friction from constantly swimming along the glas.