My personal list!.
15. Friedrichsthalii
14. Buttikoferi
13. Istlanum
12. Motaguensis
11. Red Terror
10. Red Devil
9. Jaguar
8. Midas
7. Trimac
6. Beani
5. Grammodes
4. Black Nasty
3. Flowerhorn
2. Umbee
1. Dovii
Please Note that this list is not 100% accurate, as any of these fish can over power each other based on personality, size and aggression.
Please Respect The Hobby and Most Importantly Respect the Fish!!!
DO NOT FIGHT YOUR Cichlids!!
Source: Experience & Research