Looks like your Short Body Kamfa is starting to fade. The dark patches on his fins and body may eventually turn orange, yellow, and red in color. A PH of 7.8-8.0 is really high for a flowerhorn. They are bred from central american cichlids that live in waters that are 7.0-7.6. Some might argue that higher ph between 7.6-8.0 helps them grow bigger heads but its at the cost of the fish's health in my opinion, and the opinion of many others. Your fish has a hard kok anyway so the higher PH is not going to help his head grow anymore. I would buy a test kit and test you PH, as well as your other water parameters. Also, I would not feed a short body flowerhorn like yours any freeze dried food. Their intestines are very compressed and freeze dried foods can cause blockage problems for them. Anytime I have kept short bodied flowerhorn I made sure they had a good amount of spurlina in their pellets.