I know it’s unusual and maybe even unkind to force you to consider the aesthetic appeal of a fish’s mouth, but please, consider this one. The red-lipped batfish (Ogcocephalus darwini) is a deepwater fish usually found near the Galapagos Islands, and its defining attribute is its mouth: big for its body (which usually grows to about 25cm, about the length of a burrito) and droopy, the red-lipped batfish’s lips look like a pair of Twizzlers melting in the sun.