My fish get tired alot?

Question

Well, I had 1 fish for three weeks, another 2 for one week, and another 3 fish for 2 days and before they all didn't get along with each other for 2 days, they kept on fighting and if one fish touched another fish, that fish would swim very fast to get away from each other now they aren't doing that, they sit on the gravel together and swim with each other but them they get tired again on sit on the gravel, Why is that?, do they get along now?

Answer 1

What size tank do you have? What species of fish and how many total, are in there?

It sounds like your chemistry is off. Try doing a 25% water change and see if they perk up. Even better would be if you have a testing kit on hand to take note of ammonia, nitrite, nitrate, and pH. Most pet stores will do this fo ryou for free, though- you just need to take in a water sample.