The Planted Tank Forum - View Single Post - Trouble with shredded betta fins...
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post #8 of (permalink) Old 03-22-2013, 03:07 AM
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If he is flaring a lot of the time, a betta can blow his tail. The membrane is only a few cells thick, longer fins blow more easily due to rapid movement in the water. My male did this when I first got him. He would be flaring constantly at his reflection and his tail looked like a shredded flag. You just have to keep his water clean until he calms down enough to let it heal.

My roommate says I'll die by giant turtle.
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