This is the first fish I've ever taken care of, so please go easy on me. His name is Baloo. My gf has had him for about 2 months. She's out of town for a few weeks, and I've taken a real liking to the little guy.
He's in a 1 gallon bowl, no live plants, no filter or heater or anything. Water conditioner is used.
He was active and eating well until about 3-4 days ago. He then started just staying at the bottom and not even caring about food.
I started reading a couple days ago and realized he's probably got ammonia/nitrite/nitrate poisoning (see pic). Water changes sound like the best way to at least stop that, correct? Water was poorly taken care of prior to a couple days ago. I did a 90+% water change 2 days ago and again yesterday. I also added aquarium salt to help him out. After the first water change he became active again, and even more so after yesterday's change.
He's trying to eat again, but he spits out the food often. He's always been fed the same dry pellets since we've had him. Should i be changing up his diet?
What I'm more worried about is the red that's developing down the long fins that hang down. It wasn't as red or as prominent before. He's also got some gold under his head, and at the base of the fins to the side of his head. I don't know if the gold was there before (never inspected so close), but don't remember the red being as far spread as it is. I've read about velvet, but I might just be paranoid here.
Thanks for your help!