Looks like he got caught in the filter a little bit.
How often are you changing the water in your tank? It should be getting filthy very quickly since he's the only one in the tank.
For treatment, just watch him around the filter or put a little nylon material around the intake so he doesn't get sucked up in it. Keep his water cleaner in the mean time too.
How often are you changing the water in your tank? It should be getting filthy very quickly since he's the only one in the tank.
For treatment, just watch him around the filter or put a little nylon material around the intake so he doesn't get sucked up in it. Keep his water cleaner in the mean time too.