Hatchetfish

Hatchetfish are well camouflaged. Like many deep sea fishes, they have light-producing organs in rows along their bellies. These organs shine a pale blue light that matches daylight filtering down from above, and hides them from predators below.

Description
Freshwater Hatchetfish are small, pond-dwelling fish of the order Gasteropelecidae, unique for their ability to "fly" over short distances - they are, in fact, the only fish capable of powered flight (though the marine Flying Fish can glide for a time). This trait manifests itself in the hover ability, making the Hatchetfish the only swimming creature with this talent, and allowing it to cover large areas rapidly- over both land and sea. This superior mobility means this creature is the ideal choice for any combinations where rapid and effcient deployment is necessary, allowing enemy lines to be circumvented or sneak attacks to be enacted.