I will do that..and ill buy the test kit this weekend. Ive had these fish bfore for many years. But ive never seen any of my fiah act the way my snow white is. When its feeding time he eats normal and swims normal. Its weird..but i really do appreciate the advice and help thank you
You're welcome. If you can't get a bigger tank could you maybe get another small one and split them into two groups - Africans and Americans?
Just because you don't see aggression doesn't mean it isn't happening. They could only argue at night when your sleeping, or when you go out, or whatever - unless you stare at the tank 24/7 you might not see them fighting.
If you can't get another tank right now is it possible to find temporary homes for some of your fish?
Also, with that many fish in such a small tank I'd highly recommend daily water changes of at least 50% (so at least 19 gallons every day for a 38g) make sure you dechlorinate your water with a dechlorinator (seachem prime is a good one that lasts a while) when you put the new water in as the chemicals in the water that make it safe for people are poisionus to fish.
Good luck.