This fish lives on the rocky seabed of the Paciﬁc. Because the ﬂoor is rough and spiky, it prefers not to swim along the bottom like a ﬂounder – instead it has evolved pectoral ﬁns that work like legs to ‘walk’ along the seabed. It doesn’t use its dorsal ﬁn for swimming either; this has evolved into a spiny projection with a retractable ‘ﬁshing rod’, which it uses to lure in small ﬁsh and shrimp.
And the bright red lips? it turns out they really do perform a similar function to lipstick. The batfish uses them to help improve species recognition when searching for a mate.