I have just noticed that both my Bala Sharks have blood red eyes. Is this normal or is this a disease.
They appear well otherwise and no other fish appear to have these symptoms.
I'm wondering if the Lemon Barb is beating them up.
The water parameters are fine.
PH 7, 0 Ammonia, 0 Nitirites and Nitrates at 40.
Any ideas please.

They appear well otherwise and no other fish appear to have these symptoms.
I'm wondering if the Lemon Barb is beating them up.
The water parameters are fine.
PH 7, 0 Ammonia, 0 Nitirites and Nitrates at 40.
Any ideas please.
