Well Sunti's tail had finally healed and was growing out. But I noticed last night he started biting it again and has a split in it. He is still blowing bubble nests though. I am wondering if he is getting too much stimulation. he is in a 2.5 gallon minibow on the night stand next to my bed. I am thinking by seeing me all the time it is stimulating him too much and making him want to munch his tail. Suchin is on the other side on the room in a 2.5 minibow also on a nightstand next to a chair. I am thinking after I change their water tonight of putting Sunti in Suchin's tank across the room ( where he can see me but I am not so close that he will be getting nervous and bitting his tail) and put Suchin in the tank next to my bed where she will get more attention. She is a fiesty girl as Yeevs says and loves attention. I of course would take their perspective ornaments out of the tanks they are used to and put them in the new ones. Sunti likes his turtle and Suchin her barrels. Do you think it will work. I might try it. Suchin is such a character. Whenever she sees me around her tank she does her Mom's here feed me happy dance

I don't know, but let us know how it works.
I have had two males that bit their tails.. ONCE, and I guess it hurt too much for them to do it again, lol.
Too bad they don't make bitter apple for fish.

Question:
Are your tanks filtered? I have always had filtered tanks, and never any tail biters. I had a friend with a tail biter and when she added a filter... very low current one... he stopped. But I've only seen it once, so I dunno if it was a fluke.

That is an idea, as though the water current was distracting enough to the fish to make him concentrate a little more on swimming, and giving him less time to get bored and snack on himself.
The thought certanly has merit.

Hey Bettaqueen since your experimenting maybe you could just get a little female that you keep in a beanie box or something similar that you can move around easily and place it by the tanks once and while to keep him from getting bored, plus its an excuse to get another fish :LOL: heck i will even send you one of my yellow X yellow /green females when there old enough :D

I honestly can't recommend keeping any plastic plants with longer tailed bettas. They do a wicked number on their fins. I keep them with the girls. But I keep mostly real plants with everyone. Much gentler on their fins and their water for that matter.
If you can't do real plants, I'd really recommend sticking with silk.

Yes. Real plants is better. If you want to using fake, gets silk fake one. Plastic plant is for crocodile. :lolo:

I found that adding a cave or a thicket of plants, real or silk, cured my tailbiters and they gave up on eating themselves.

Since that worked I just figured the poor things were over stressed.

actually he has totally grew out his tail to normal .the experiment was a success. he just did not want me staring at him while his tank was on the night stand.

Glad you've had good success! Sounds like stress from overstimulation was to blame. For future reference for other betta owners, here is some info:
I deliberately seek out and buy tail biters, and have observed the following regarding the behavior itself and how to remedy it. This is copied from a post I made at UltimateBettas:
The best way to curb finbiting behavior is to try and figure out what the trigger is, and minimalize it. I've found three basic types: stress biters, which are the majority of fin biters; boredom biters, and unknown-trigger biters. Boredom biters are the easiest to "cure" of their bad habits, stress biters can be helped to some extent, and unknown-trigger biters are difficult because... well... there is no obvious trigger or pattern of behavior. ((Note: These are my own terms that I use to describe my own experiences with biters, which is extensive since I deliberately seek them out and buy them. They are not terms formally recognized anywhere))
In the case of a fish who is a stress biter, there are usually some obvious personality differences from "normal" bettas; you are looking at an extremely high-strung, anxious fish. The kind that dart and hide when you walk by, are more likely to "run" away than flare, etc. They often are "pacers," meaning they follow a consistent, repetative path in a stereotypical manner around the tank, usually along one particular wall. And, every time there is any change in the surrounding or internal tank environment, you find a much shorter tail shortly thereafter.
Boredom biters also tend to be pacers, but are not usually high strung. These tend to be clever, alert, responsive, and active fish who want to be "in the action." Sometimes moving the tank somewhere high-traffic in the home helps. Adding a current occasionally helps. Changing around the internal and external tank environment is very helpful, as is offering "toys" and live foods to break up boredom. I've found one of the best remedies is putting them next to or in a DIVIDED tank with a female; they get out energy displaying for the girls and have the visual stimulus of other fish.
Unknown-trigger biters are those fish that you just can't figure out. You try behavioral enrichment, they bite. You try stability, they bite. You keep them alone, they bite. You put them in with other fish, they bite. I strongly suspect that these fish in particular have a profound behavioral abnormality with genetic links that can not be rectified, just as a small percentage of humans with, say, eating disorders will never recover. The best you can do by these fellas from my experience is just keep things clean so they don't get infections. I have only come across two unknown-trigger biters ((Though my guy Jeff borders on it sometimes)); most of my guys are stress-biters, and two are boredom biters.

Thanks Random that was an excellent an informative post. Thanks for posting that. I think I will pin it at the top of the section if my mod powers let me.

I tried the exact same thing with Rembrandt and so far it seems to be working, and it is the only thing that actually HAS worked. :WOW: His fins are starting to grow back, and I have some Indian almond leaf in with him to help. Yay!