Honestly, I would say that in a VT, I wouldn't mind the anal fin being longer. This is one tail type that I think looks better with a long anal. Also, the under part of the caudal shouldn't be raised at all, unless flaring. These are just standards that I would have for my own bettas. I'm sure we could compile an actual set of standards, but I doubt everyone would agree with my own. Everyone's standards are different.
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