He is a crowntail correct ? <Yep. He looks almost identical to the one in your picture!>
Do you know if you have soft or hard water ? Hard water can cause rays at the end to curl. <I have hard water and i have heard that before but the rays arent just curled. They are have jagged edges at the tips and look bent in some places.>
Also he may be biting them, have you ever seen him chase his tail ?< I thought i saw him looking at the end of his tail, with his body curled to the side but it wasn't for long and I never saw him bite it. I read your response along with the previous commenter's so I feel like I might just be paranoid.>
It would be helpful to know what size tank he is in and how often you are doing water changes. So give us and update and we can go from there.
<10 gallon tank with light and filter.
To keep a steady temp for him, I purchased an adjustable heater today which is set on 79oF.
His tank usually stays between 76-80 without it. I live in Florida and my bedroom is quite warm.
I have only had the tank for about 2 months and have had to break it down for a thorough cleaning( including a gravel swap ) about 3-4 weeks ago because of a pest infestation from a live plant I purchased. Bad decision for a newbie! It had non parasitic worms, diatoms, and I've seen one tiny snail which I removed. On top of that the plant kept rotting feeding the pests. This caused my tank to begin recycling -.-
Since then Ive been doing weekly large (30-40%) water changes with a 25% pwc midweek.
I don't always run the filter because he doesn't like the current it generates ( which I do adjust for him by pulling the intake tube out a little bit ) and I worry it makes it hard for his fins to heal.
PH is around 7.6 (Highest on the regular test which is 6.0-7.6, lowest on the high ph test which is 7.4-8.8)
Right now, about to do a weekly 30% water change, the ammonia is 0<.25ppm, same for nitrite. No nitrates yet because of recycle.
I treat the water with API Stress Coat and Start Zyme (not sure of the brand). I have also been adding 1/2 tsp/gal of aquarium salt to half of the water I add for pwcs. Ive read that its good for external problems and warding off infection & disease but a lot is bad for bettas.>
And yes a picture would be also help if you can post one. <Im trying to get one with my iphone but its hard to get a good detailed one especially because he keeps facing me and flaring at the camera. LOL. He's never done that before today! I wasn't even using flash. This also makes me wonder if he's agitated though. I almost wanted to use some fresh carbon and remove the bettafix in is water. Ive read it can hurt their labyrinth organ. I haven't done it though. I will have pictures up ASAP.>