You're gonna get a lot of heat in this thread because your fish are in really poor water. For most of us, it's kind of shocking. If you truly want what's best for your fish, and you also want to keep them, you've got to pick up some habits quickly. Immediately. Change the water, right now, if you've got some water conditioner to dechlorinate the fresh water coming out of your sink. If you don't, go pick some up first thing tomorrow, then change the water. After that, you need to change about 10% of the water every week. Feed only as much food as can be eaten in a couple of minutes--the rest falls to the bottom and fouls up the tank with waste. If you can't commit to that, your fish will suffer slowly and die, so the best thing to do would be to bring them back to a fish store that can give them the proper care. If you're running low on funds and need a filter, many of us have extras, including me, and we can send to you.