Coloration of reef organisms

Images likely seen by different types of reef organisms when they look at a queen angelfish:

drawing of mantid shrimp image of a queen angelfish simulated in ultraviolet This is total guesswork: if a mantid shrimp sees in ultraviolet and if the image is assembled in the brain as a composite image from the many separate ommatidia in the eyes, then an image similar to this is a possibility
photograph of a barracuda photograph of a queen angelfish A fast-moving predatory fish like a barracuda with good colour vision will likely enjoy an image similar to what we see
photograph of a squid fuzzy photo of queen angelfish black and white Cephalopods, including squids and octopuses see only in black and white. With a resolving capability about one-third that of our eyes, this may be what it would see
photograph of a dolphin photograph in black and white of a queen angelfish Dolphins see only in black and white. Although probably known for sure only by the U.S. Navy, which has extensively researched vision in delphinids for purposes of finding (and delivering?) explosive torpedos, their visual acuity may be quite good, but perhaps not as good as ours
photograph of a clown crab photograph of a queen angelfish This is what most scientists think a typical crustacean would see: full colour and a composite (rather than fragmented) image
mock-up of barracuda with spectacles fuzzy photo of a queen angelfish What can we say...? If the barracuda hadn't lost one of its lenses, then the image would likely be as seen by the barracuda in the second example from the top