FWIW, I have some pretty young local wild fish. I've had a number of them
with nicks and so forth from their fins. The worst took a good 6 months or
more to grow back. But they were missing less than half the tail fin. YMMV.

Jonathan

"Satyen Kale" wrote in message
om...
I have a female yellow labidochromis caeruleus in my tank who has lost
almost her entire tail fin due to aggression from a male yellow lab. I
have isolated her in a small mesh box in the same tank to allow her to
recuperate. I have also been adding Melafix to promote fin growth.
However, it has been almost 2 weeks now and there have been no visible
signs of growth. How long does it usually take for a tail fin to grow
back? The fish seems otherwise pretty healthy and seems to keep
wanting to get out of the mesh box.

satyen