losing fish everyday need help

[soccerkingbing]

im losing at least 1 fish everday and i think i have an incompatible fish because my waters fine
4 neons
2 african butterflys
5 tiger barbs
1 angel fish
3 loaches
4 black widows
2 guppies
3 blue barbs in pic
please help

 

[Cheart99]

First what size tank are they in? Also have you done water testing,ph ammonia, nitrites, ect?

 

[black angel]

If you could tell us more about your tank then that might help us to help you more.
How long has the tank been running for and how you do water changes and filtration used will all help

 

[black angel]

Just noticed you have african butterfly fish. I think these are predators and eat small fish, maybe they are eating the fish through the night??