URGENT*** Possible Betta sickness??

[skatz]

I just recently discovered my male betta looks like he's losing scales and color (shown in picture). It looks almost like his tail is shedding, too. I've never seen this happen before. I clean his tank once a week and I treat it with Betta water dechlorinater. What can I do?? I love my little buddy, I want to help him. Thank you for any help you can give me!


*Also, I apologize if this is in the wrong thread, I wasn't sure where to post it.

 

[Rbishop]

Define "clean" the tank?

Current pH, ammonia, nitrite and nitrate readings from a good liquid test kit?

Amount and frequency of water changes?

Tank size?

 

[Wild West]

Is that an ulcer on his gill? Could be ammonia/nitrite/chlorine burn? I might try increasing water changes?