But will it regrow?Hard to tell from the photo but it appears that part of the gill cover is torn? If so it will probably heal to a degree,it may or may not look the way it used to.
The important thing right now is to keep the water pristine in order to stave off possible infection of the damaged area.
You’ll have to wait and see. extra water changes. It could heal back to an extent but not look the same or it could. Depends really how bad it is but it’s hard to see from the photo.It is that thing, not the gill plate but the soft part
In betta fish i would call it the beard
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