The fish’s loins, on the other hand, are a somewhat trickier fit (literally) for that purpose. Anableps anableps is commonly called a four-eyed fish, but it actually has only two. They look like ...

Four-Eyed Fish The Four-Eyed Fish (Anableps) stands out for its remarkable visual system. Though its name suggests otherwise, this fish has just two eyes—each divided into two distinct parts by ...