One of my male Dwarf Neon Tetra (DNT) fish seems to have separated itself from the rest of the shoal (2 females and another male) and has took to staying still just below the water surface. Occasionally, he will go right to the top and it looks as though he is drinking the water.
This particular fish was bought about 1 week ago and I noticed that from head to tale it was a shade darker than the rest and it appeared to have a small white string/thread (less than 1cm in length) on it's lower jaw. So far, he is still eating but I think a serious issue may be developing based on the darker scales and the white thread.
The reason I thought to place this thread here is due to the fact that one female DNT died over night last night and the day before it was manifesting the same behaviour as what this male is doing but she did not have a darker shade of colour or a white strand on the jaw.
My water parameters are as follows: 0 ammonia, 0 nitrite, 10 nitrate, 7.4 PH. The aquarium passed it's fishless cycle qualifying week one month ago.
Here is a video taken of the gasping DNT.
Any help for identifying what might be wrong and correcting the problem would be highly appreciated.
This particular fish was bought about 1 week ago and I noticed that from head to tale it was a shade darker than the rest and it appeared to have a small white string/thread (less than 1cm in length) on it's lower jaw. So far, he is still eating but I think a serious issue may be developing based on the darker scales and the white thread.
The reason I thought to place this thread here is due to the fact that one female DNT died over night last night and the day before it was manifesting the same behaviour as what this male is doing but she did not have a darker shade of colour or a white strand on the jaw.
My water parameters are as follows: 0 ammonia, 0 nitrite, 10 nitrate, 7.4 PH. The aquarium passed it's fishless cycle qualifying week one month ago.
Here is a video taken of the gasping DNT.
Any help for identifying what might be wrong and correcting the problem would be highly appreciated.
. The thing that gets me angry is, I didn't get to pick the DNR's I have, the LFS helper picked them and netted them and to be polite I said nothing. I highly doubt I would have picked a darker colour DNR with faster gill movement as I'm not the kind of person that appreciates wasting money and flushing fish down the toilet!!