Longfin Dragonfish
Tactostoma macropus
- Least concern
- Card rarity: Common
- Fish

Tactostoma macropus, the longfin dragonfish, is a species of barbeled dragonfish found in the Pacific Ocean down to depths of 2,000 metres (6,600 ft). This species grows to a length of 34.3 centimetres (13.5 in) TL. This species is the only known species in the genus Tactostoma and belongs to the family Stomiidae, the barbeled dragonfishes. These fish are deep-sea pelagic predators and with 317 species of dragonfish they are one of the most speciated and most diverse deep-pelagic family of fish. With only 19 species off the coast of Northern America, Tactostoma macropus remains as one of the most commonly found Stomiidae in the Pacific Ocean.
Classification
- Class
- Actinopterygii
- Order
- Stomiiformes
- Family
- Stomiidae
- Genus
- Tactostoma