The silver hatchetfish is a member of the family Gasteropelecidae, and the genus Gasteropelecus. It is a realtively small fish that is usually kept in aquariums. It is compressed laterally, with black and gold lines running along its side. It had the capability of "flying" out of an aquarium, so some caution should be taken. It uses the ability to "fly" to catch insects Genera Carnegiella Gasteropelecus Thoracocharax The family Gasteropelecidae consists of the Freshwater Hatchetfish. ... Aquarium is also the name of the Russian band, which is also spelled Akvarium A 335,000 gallon (1. ... Orders Subclass Apterygota Symphypleona - globular springtails Subclass Archaeognatha (jumping bristletails) Subclass Dicondylia Monura - extinct Thysanura (common bristletails) Subclass Pterygota Diaphanopteroidea - extinct Palaeodictyoptera - extinct Megasecoptera - extinct Archodonata - extinct Ephemeroptera (mayflies) Odonata (dragonflies and damselflies) Infraclass Neoptera Blattodea (cockroaches) Mantodea (mantids) Isoptera (termites) Zoraptera Grylloblattodea Dermaptera (earwigs) Plecoptera (stoneflies) Orthoptera (grasshoppers, crickets...