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| | Fin Rot in Tropical Fish |
 | | Poor fin condition can be the result of excessive nitrites in the water, high levels of ammonia, or improper pH levels, all of which are usually the result of inadequate tank maintenance. |
 | | When the fins are weakened, or when they have been nibbled or abraded against rocks, then the fish becomes open to fin rot, which is difficult to treat, and highly contagious. |
 | | Fin rot can be caused by a number of bacteria, which will produce initial symptoms ranging from discolored fins, to red lines running through them, if the fish also has a condition known as Red Pest. |
| www.tropicalfishisland.com /tropical-fish-keeping/fin-rot-tropical-fish.html (427 words) |
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