04-30-2008, 08:49 AM
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Diagnosing Fin Rot in Betta Fish
I just bought a male betta fish from a pet store and noticed some discoloration (brownish in color) on the bottom of his tail. None of his other fins seem to be affected, and the hole that was in his tail is healing nicely. He also seems to have some new fin growth on all of his fins (it is clear and healthy looking). The discoloration does not "seem" to be growing and I have been watching it since I got him on Sunday. Otherwise he is perfectly healthy and loves his new home. He is in a 5.5 gallon tank with an Azoo Palm Filter, heater (the water temperature is a constant 78-80 degrees Fahrenheit, and thermometer so that I can monitor the temperature easily. He has a few plants (one that he loves to sleep on), a shelter, and gravel. The pH is about 7.0. I feed him bettamin and bloodworms both of which he loves, and am careful not to overfeed him. As for his water, I will do a 25-50% water change once a week using tap water conditioner and a small amount of aquarium salt. My water comes from a well , is fine for us to drink, and does not have any chemicals added so I do not need to age it. When I set up the tank, I used the recommended dosage of stress zyme to start up the biological system and will again add some at 1 week and 2 weeks after the initial setup as the directions recommend. I know how to treat fin rot, but am just having trouble diagnosing it as I have seen some pictures of bettas with this brownish tip to their tails that are actually growing new fin tissue. I don't want to medicate if it is not necessary and I appreciate any advice that you can give me. Thanks.