I picked up a new 8.5 inch Senegal tonight..........it is in perfect condition except for it seems to have some damage on the front of its mouth.......it almost looks like from too small of a tank and rubbing against the glass.........my main concern is that the tubelike nostrils that polypterus have, his seem to be damaged........not gone but just torn up a little bit...........Is there anything i should do for this damage or will it heal on its own? It is very active and eating so how concerned should i be about it?