Subject: The Inimicus combines camouflage with aposematism. Camouflage is the use of colouration and/or texture to make animals hard to see or to make them look like something else, while aposematism is advertising by using bright colours (often yellow, orange and red combined with black) that the animal is toxic, distasteful or dangerous. These two opposite defence systems are exploited by this highly venomous demersal ambush predator (demersal = living and feeding near or on the bottom). The camouflage is used by the Inimicus to hunt prey and the aposematic coloured pectoral fins are used to warn off potential predators.
Technique: I never recommend filming a fish (or any other animal) from behind or from above unless it’s to reveal specific details that otherwise cannot be seen. I increased the saturation of the orange to boost the colours of the Inimicus’ pectoral fins.