I haven't got a chance to sort through my photos, but I will be posting soon.
My theory based on my personal experiences with Bettas is that I believe they really don't like having the extra heavy finnage dragging behind them. None of my crowntails are tailbiters and so far only my halfmoons have done this, but only after a certain point. They start to bite when their tails have reached a certain spread and length. I think it may partially be stressed related so they give themselves "fincuts" to reduce drag. This of course is based off my own bettas and observations.WOW! Nice shots! Now I have to get to mine too.
Just wondering, why would bettas start biting their tails? I have couple of those now too. Are they bored?
Atom, I really like Locke's color, would love to see a recent pic of him.