I have two corys who spend most of their time in a castle. One of them comes out occasionally, the other almost never (I pick up the castle during water changes to check on him). Today I was testing my water and the one was out in the front of the tank. I took a close look at him and realized his fins are very damaged! Mostly his tail fin and the one on his back - I'm sorry, I don't know the proper names! Who is doing this to him? What should I do? Do they grow back? - dumb question, I'm sure. Any advice would be greatly appreciated!
My cory's fins are almost gone!
- Thread starter cambro
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They'll grow back, but not likely as nice as before. I don't know what in your tank would be munching on them though. My corys got munched by a barb and now they look ok, but before their fins were all tattered.
I've seen this before in another tank. it could be other fish fin-nipping, but my guess would be poor water conditions. how often do you do water changes and how much? Most tanks need about 25% change once a week with dechlorinated water. if you post your pH, alkalinity, hardness, nitrite and nitrate levels we can make a better diagnosis
if the fins are not compleately gone they should grow back if you improve tank conditions
ps the fin on a fishes back is called the dorsal
if the fins are not compleately gone they should grow back if you improve tank conditions
ps the fin on a fishes back is called the dorsal
Your blue flame and fruitloop tetra's are, I believe, in reality black skirt tetra's, which have a well deserved reputation as fin nippers. If it was a water quality issue I would think that other fish would be affected as well.
Thanks for all the input! My water conditions are quite good I think - I do a water change every week or two. My pH is 8 and very stable. Nitrites and ammonia are nil and my nitrates hover around 10. I'm glad to hear the fins will grow back! I have wondered if it is the tetras because they all seem to hang out in the same corner. The cory seems healthy otherwise. I know one of my tetras is quite a bully when the food arrives- chasing everyone away. Perhaps it's him.....I'll have to keep an eye out! Thanks again.