''Tactostoma macropus'', the longfin dragonfish, is a species of

barbeled dragonfish Stomiidae is a family (biology), family of deep-sea ray-finned fish, including the barbeled dragonfishes, that live in all oceans in a wide range of depths. They are quite small, usually around 15 cm, up to 26 cm, and they exhibit a st ...

found in the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

down to depths of . This species grows to a length of TL. This species is the only known species in the genus ''Tactostoma''.

References

* Stomiidae Taxa named by Rolf Ling Bolin Fish described in 1939 {{Stomiiformes-stub