They are all Malawian cichlids, mainly zebra, third one is an accei, last one looks to be a venustus. They all do best in alkaline hard water. Feed them regular cichlid food and they'll do fine.
Pic 1- left looks like yellow lab, right looks like red zebra
Pic 2 looks like yellow lab
Pic 3 middle fish is acei cichlid
Pic 4 looks like demasoni
Pic 5 is venustus
Pic 1- left looks like yellow lab, right looks like red zebra
Pic 2 looks like yellow lab
Pic 3 middle fish is acei cichlid
Pic 4 looks like demasoni
Pic 5 is venustus