Hi, I need some help. One of my daughter's fish seems to be dying. It's barely moving, stuck on the bottom and barely breathing. It's body is curved to the side. Gill seems to be 'open'? Seems to be kinda flared out and does not move much. I looked for white or red spots, but nothing was telltale. I had noticed some black markings on the face, but was told since it was still a baby, the color change was normal. We had a small heat way Sunday and Monday, so the tank temp got up to 72-74ish. Specs... 2 common goldfish. Young, we've had them for about 6 weeks. Tank set up on 4/7. 40G breeder, gravel, live plants, stingray light, penguin 200 filter. Tank is not cycled. Weekly water changes. I use Prime and Stability. Filter media has not been removed, cleaned, etc. API Master... Current readings: 0.25 ammonia, 0 Nitrate, 0 Nitrite. Weekly water changes. I do have algae. Feeding schedule was suggested by a coworker, said he has had many aquariums. Feed every 7 days, then 6, then 5, then 4, then 3(in an effort to control ammonia spikes). I've moved the sick fish into a bowl with some peeled peas for the moment. If I've left anything out, please let me know.