I have a Siamewse fighting fish whose finnage is shortening and becoming more and more frayed. I haven't seen other fish nibbling at him, but if i isolate hom how long should it take for regrowth to benoticeable? Is there a non-terminal disease that would do this? I've had him since about June last year.

What fish is he in with? It might be fin rot. Any sign of blood in the fin rays?

he's in with neon tetras, emerald eyes, female swordtails, glowlight tetras, WCMM's. No sign of blood anywhere but he is red so could be a bit hard to see. I wondered about fiin rot but as he's been like this ever since I got him I thought he wouldn't survive that long.

I would wonder if the tetras aren't getting to him then. Can you separate him from the rest? They only attack when you aren't looking

hi there

If it is the tetra's that are nibeling his fins try to put him in quarantine

ore in one of those floting breeding tanks. I hope that you know the one I meen. and treat him with melafix it will help with healing of his fins faster.

scalare

thanks, I will do the isolation thing that way i can treat with melafix easier. Any idea how long before new growth will show?

IMHO you are better off putting him in a floating breeding trap and treating the whole tank with melafix, it wont harm the other fish etc and if you have fin rot will help cure the whole tank otherwise he will just get infected again when you put him back, plus keeping him in the same tank will save stress of different water conditions etc.

It should only take a few days (a week at most) before you notice the fins growing back.

except thatr he has been in this tank for 7 months already and no other fish has developed fin rot over that time, so I'm picking its probably not that.

Often diseases will sit dormant in your tank until a fish is stressed or injured. IMHO unless you are forced to spot treat something or the cure is going to harm the rest of your tank it is safest to assume that every fish in the tank has it and treat the whole lot.

point taken, didn't realise 'things' could hide in the tank like that waiting to atackk!