I've had Nellie for about 5 months. She's always been a little fatty and scarfed down her cubes of bloodworms within seconds of them hitting the water surface. Her tank-mate, a goldfish that she's been raised with the whole 5 months, just died. She has completely quit eating her food. I've tried to tap the water so she feels the vibrations of food dropping but she just swims away when it always worked in the past. I've tried putting it in front of her face but she just ignores it. She hasn't eaten for 3-4 days now. I don't know if it's something related to the fish dying or it's just a coincidence that she won't eat at the same time the fish passes. Any suggestions? I need help! I don't want her to starve or die!!