It's when I thought I had this fish thing down I lost one of my orinoco plecos. I loved him dearly. Not sure what happened my water parameters are nitrite 0, nitrate 5-10 mg, ammonia .25 mg, ph 7.5. These levels are a bit upsetting because I just did a wc and I like everything to be at 0 besides ph of course. I did notice some of my danios fins were slightly tattered. I don't know if I'm just grasping at straws to figure out what went wrong but I think I see very tiny white spots. I have no experience with ick but this event is just very strange. Is a level of .25 ammonia enough to kill a fish? If it was ick wouldn't the signs be more noticeable? I'm fearing for all my little ones now I will post a few picks of my late pleco.