Help I dont know whats wrong.

huma huma6

Member
So I get a sixline wrasse yesterday for my 55 gallon. It was doing pretty good, it ate the first day. the next morning it and my cleaner shrimp were dead. My ammonia is 0 and nitrate around 20. Im doing a water change because for some reason my fish didnt eat there food and it messy. Ps. I got my foxface like 3 months ago and it is dark colored one im around. Then when i leave it turns to yellow and is normal. Whats up with that?
 
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