It’s scientific name is Sueviota aethon, a nod to one of the four horses of the Greek Sun god, Helios, with S. pyrios being named after another. And, the researchers add, “the common name, Grumpy dwarfgoby, refers to the fish’s apparent grumpy and rather unhappy appearance, primarily due to the extremely upturned mouth position.”

Pretty much hits the nail on the head.