I have had one of the above fish for about two years and he has been very healthy, however today i noticed that he wa having a problem keeping himself level and he kept sinking to the bottom. he has got worse during the day and is now lying on the bottom. From time to time he comes to the surface and gulps for air . He then sinks to the bottom. All the other fish are healthy.
is there anything I can do .
many thanks :sad:
is there anything I can do .
many thanks :sad: