The pineapplefish, "Cleidopus gloriamaris", is a species of fish. It is also known as the knightfish or the coat-of-mail fish, due to the scales on its body. Some people call it the port-and-starboard light fish, as it has a pair of bright spots that are like a ship's lights. "Gloriamaris" is from the Latin language "gloria" and "maris", means "glory of the sea".