tosviolation
Aquarium Advice Apprentice
Hi guys! I have a 20 gallon tank with 6 bronze corys and 8 harlequin rasboras. Its not heavily planted, but it does have some live plants and a couple pieces of mopani driftwood in it. My question is why are the corys so scared all the time? Anytime I get near the tank they freak out and bolt for cover. I have ph 7, 0ppm ammonia and nitrite with about 20 ppm nitrate and I keep the water at about 77 degrees. Is this normal behavior? or maybe do I need more plants?