''Dolicholagus longirostris'', the longsnout blacksmelt, is a species of

deep-sea smelt The deep-sea smelts are any members of the family Bathylagidae, a distinct group of marine smelts. Deep-sea smelts are marine fishes found in deep waters throughout the oceans, down to in depth. They are small fishes, growing up to long. They ...

found circumglobally in deep waters of the tropics and subtropics. It is found at depths of . This species grows to a length of .

References

* Bathylagidae Monotypic fish genera Fish described in 1948 {{Argentiniformes-stub