I'm on my break from work so I came home. The pump was delivered so I set it up (it's a Tetra Whisper like my filter, but it's still pretty loud.. ).
He's not looking good. He went into the air bubbles and was tossed across the tank. He's nose down a lot...could this be swim bladder? Maybe from the carrots/apples yesterday? Little Ro is perfectly happy and healthy, so I can't see it being a disease..
Oh dear, Kelsey. More fins falling off isn't good. The old ones shouldn't fall off; new fins just grow on the end. It does sound like something is infecting him. Gasping, lethargy, and fin loss are not good signs. This is out of my fish veterinary scope. I would go here The GAB View forum - Help! My Fish is Sick! (it's a goldfish-specific forum that has wonderfully smart people) and ask their opinions. You could also try to PM Lupin as he is another user who is extremely knowledgeable about goldfish. In the meantime keep up your water changes and test the water. If you're having an ammonia spike this will contribute to his problems. Wishing you the best.
A varied diet is an attempt at achieving the main goal of complete and balanced nutrition. A high quality prepared food is a variety of ingredients that together provide complete and balanced nutrition.
Still feeding a few veggies is one thing, but I wouldn't do it in excess (maybe once or twice a week max). Effectively the whole diet should be a high quality pellet. This is what my fancy goldfish get and they grow VERY well and do try to breed in the tank on a regular basis.
We have obviously come to different conclusions on what constitutes good goldfish nutrition. Regardless, we both agree NLS is a good food for Kelsey's fish, and that's all that really matters in this thread. There is a fish food thread somewhere on the TFK boards. That is the time and place to debate fish nutrition. To do so here is the derail her thread.