Q: What are those things swimming around the reef?
Q: Buzzzz…there’s actually no such thing as a fish.
That’s the conclusion of eminent natural historian Steve J. Gould (small world coincidence – Lori sang in the same choir as him years ago). There are all sorts of creatures dubbed “fish” and yet they all exist on all different branches of the species taxonomy – jellyfish, cuttlefish, crayfish, shellfish starfish. There is no one Order or Genus that contains all or even the vast majority of species that people popularly refer to a “fish”. As a Telegraph piece describes: “Unlike mammals and birds, not all the creatures we call fish today descend from the same common ancestor. Or put another way, if we go back to most recent common ancestor of everything we now call fish (including the incredibly primitive lungfish and hagfish), we find that they also were the ancestor of all four-legged land vertebrates, which obviously aren’t fish at all.” (at least in the Maldives you can be pretty sure that the “fish” you are dining on is actually the fish they say you are eating which is not always the case elsewhere).
On a similar note, Bird and Moon flippantly points out another aquatic “Animal With a Misleading Name” – the Peacock Mantis Shrimp. They look like a walking lobster tail where the claws and long legs have been removed (but they’re not even Lobsters either). Mantis Shrimp are their own distinct order of “Stomatopods” (which falls under the Subphylum of Crustaceans). But their mendacious moniker isn’t the only curiosity of this colourful creature. In fact, the Oatmeal, illustrated a complete portrait of the bizarre life of the mantis shrimp (“my new favourite animal”) with such factoids as and they can move their limbs so quickly they can supercavitate the water (like boiling it), they can accelerate as fast as a bullet, their limbs are so resilient that the cell structure has been studied for the development of combat body armour, they can’t be kept in aquariums because they tend to break the aquarium’s glass.