What's wrong with my betta?

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lilyherna

Aquarium Advice Newbie
Joined
Nov 20, 2017
Messages
2
Hello, I am a new betta owner. I have no experience with fish and I would like some help. Today I noticed this white mark on my betta and for the last week he has been a picky eater. Does he have a disease? Please help :(
 

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It looks like scale damage. Sometimes one of my bettas will lose some scales when he rubs up against the driftwood in the tank.

Another one of my bettas has recently been a picky eater. This may be because I'm constantly changing their diets up to try and include the broadest range of nutrition, but after completely changing his water and deep cleaning his substrate due to some microbial life I noticed, he's doing great and eating anything I throw at him.

So long story short, could be he's just being picky, or his water quality is bothering him.
 
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