fish

striped fish seen in a nature program. They were not the main subject, so I have no idea what species this is. Unfortunately have completely forgotten which documentary it was in, I don't even know which ocean. I do know they are a marine fish, with two dorsal fins, long narrow pelvic fins, broad stripes across the body. I don't think it's an angelfish. Not stark black-and-white either, but a duller hue/contrast.

Initial sketch visible if you mouse over the image.