I'm currently experiencing some problems with a female motoro, and was hoping that maybe some of the keepers here have encountered any similar problems in the past. I have four rays (2 hystrix, 2 motoro) and recently the female motoro has started to act as if she is sick. She has stopped eating, is not as active as the other rays, and it seems as if her eyes are filled with some sort of fluid (orange in colour). All of the other rays are completely normal, as well as the other fish in the tank, so, I'm wondering if anyone has encountered anything like this before. I've raised the temperature up, and started a salt treatment regiment in the meantime. All the parameters are: GH: 120 (always been 120) KH: 0 pH: 6.5 NO2:0 NO3: 40 if anyone has any suggestions, that would be great. Thanks