Not sure if I am overreacting or if my oto is sick. I'm watching my tank closely because my german blue ram passed away today for no apparent reason . I'm uploading two pictures one of the oto displaying the white marks and oto2 without them like the rest. Here are my water parameters. I used both the API Freshwater Master Kit and the Tetra Easy Strips ~API/Tetra~ Amonia: 0/0.5 Nitrate: 10-20/10 Nitrite: 0/0 PH: 8/8.2 ~Tetra Only~ Hardness: 300 ppm Chlorine: 0 ppm Alkalinity: 120 ppm Disclaimer: All my fish have been acclimated to my high PH and have shown no signs of stress.