I was just wondering how you can tell if your fish are stressed. Our fish seem to be a bit more 'zippier' than usual and I was just wondering if they were stressed or it's me being paranoid. We've had one of our guppies die recently so I did a 30% water change.
These are the tanks stats:
1 plec, 3 guppies, 1 swordtail and 7 lampie tetra
Tetra Prima Granular food which we crush before giving to the fish twice a day
Light stays on for 7 hours a day
Been running for nearly 2 months
pH - 7.3
Ammonia - 0
Nitrate - 8
Nitrite - 0.1
These are the lowest Nitrite and Nitrate results we've ever had.
Also what's the best amount of water changes to do in a month? Is it one a week or one every fortnight?