Betta is a very beautiful fish and so is it highly sensitive. From getting irritated to getting depressed it has a lot of little fragments which can result in degradation of its health. But, you need not worry about it being sick if you have these precautions kept stored in your mind during fish tank setup.
But, a fish can still get sick even after taking all these precautions. So, you need to keep a regular check on your little friend to observe these following different identifications of Betta fish diseases.