Hi all. I have noticed black spots on my Metriaclima Estherae ( Red Zebra)
He is eating and behaving normally and none of his tank mates have it.
The tank is 450 litres and his roomies are 2 X E. Yellows, 6 x Peacocks, 3 X Cobalts, 1 X Melanochromis takeaguess.
Ammonia 0.00ppm
Nitrite 0.00ppm
Nitrate 20.00ppm
30-40% weekly water change due tomorrow.
Any diagnosis? Should I isolate him?