Hi 
I have a lemon tetra that is about 3 years old and for the last few months he has been swimming with his head pointing upward. At first I assumed he was dying, but 3 months later, he's still here. When he darts across the tank, he swims horizontally. He is eating normally and is extremely difficult to catch (with a net). He doesn't seem to be in distress, I just feel bad for him when I see him doing what looks like treading water.
Any idea what's going on with him? Is it treatable?
Thank you
I have a lemon tetra that is about 3 years old and for the last few months he has been swimming with his head pointing upward. At first I assumed he was dying, but 3 months later, he's still here. When he darts across the tank, he swims horizontally. He is eating normally and is extremely difficult to catch (with a net). He doesn't seem to be in distress, I just feel bad for him when I see him doing what looks like treading water.
Any idea what's going on with him? Is it treatable?
Thank you
