So I was feeding my fish just a minute ago and noticed that my Gourami has a big red swollen eye. He's been eating completely fine, but have noticed that for the past few days he has been swimming back and forth across the tank (not sure if this is normal).
Not sure if this is popeye?
It's a 125 litre tank and the water parameters are:
ammona 0
nitrite 0
nitrate 20
ph 7
Not sure if this is popeye?

It's a 125 litre tank and the water parameters are:
ammona 0
nitrite 0
nitrate 20
ph 7