Colour also getting faded (though it was quite reddish few days back). Initially, it was the breed, size of the flowerhorn’s head, also know as the “kok” or “nuchal hump” and color that people focused on. Also it consumes food 3 times a day & showing some hiding nature. flowerhorns. Other flowerhorns I've cared for that weren't mine only missed meals when they were sick or stressed. I had changed 75% of his water on 11/25 and when I noticed the problem yesterday I changed 75% again. They are large fish reaching between 12 – 16 inches in length. (Yesterday my Flowerhorn stopped eating and I noticed his kok was becoming soft and deflated. answer #2. southern creature. Regards, Santosh. 9 years ago. As living creatures ingest things whether it be or drink we can start to build up a tolerance for it. But it's head is not prominent yet. Flowerhorn not eating and kok is deflating 12/3/18 Hello crew and thank for any help you can offer me. Flowerhorn Fish is an American Cichlid with a large, bulky and oval body with fan-shaped fins and bright colored Kok in its head. Think of someone who drinks alcohol they start to require more and more to feel what they used to feel. The fish has long and pointed dorsal and anal fins while their caudal fin is rounded, spade-like appearance. Aquarium. And then people started looking for pearl, the patterns on the side, short body, facial structure, and on and on. (Yesterday my Flowerhorn stopped eating and I noticed his kok was becoming soft and deflated. My flowerhorn is a pig and never misses a meal. Pls advice. The growth of Kok of a Flowerhorn no doubt depends upon the genes but apart from that if you follow the tips mentioned above you will find that the Flowerhorn.. 272 likes. I had changed 75% of his water on 11/25 and when I noticed the problem yesterday I changed 75% again. Flowerhorn Farming. In most of the strains, the fish has a black horizontal marking in its body. Different Flowerhorn foods on the market all contain various volumes and percentages of these ingredients and this in itself is why mixing up your Flowerhorns food is so important. I feed my fish every other day. Flowerhorn not eating and kok is deflating 12/3/18 Hello crew and thank for any help you can offer me. Ok. How often do you feed? I use to feed only Humpy head & Redsyn. I have a flowerhorn fish measuring about 5" long. Also what is his regular food and favorite treat? As the Flowerhorn scene progressed, so did people’s wants.