Zebra Danio Being Unusual

[F4A]

I was about to start a water change but noticed my zebra danio were acting unusual. Two of them were stuck in the plants, and the other three were just lying on the gravel. When I opened the lid they went totally mad, darting off at high speed swimming into the glass, plants, and other fish. They settled again for a few minutes on the bottom before starting to swim around. However, whenever I go near the tank they go mad again. At the moment there is just one in a plant, the rest are swimming. My snails, shrimp, and guppy are all ok and acting normal. Whats wrong here?

Ammonia 0.25ppm
Nitrite < 0.02ppm

 

[dkpate]

Probably the ammonia and nitrite. Their bodies are fighting it off and they might be tired.
What test are you using to where you get .02 nitrite? I don't think my API test goes that low, just to .25.

 

[F4A]

JBL measures from 0.01 - 1, its very accurate. The API test doesn't even show up.

 

[dkpate]

Well, I would just do some water changes, and see how it goes.