n = 30
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Bathylagus alascanus | Chapman, 1939 | Pseudobathylagus milleri | Bathylagidae | Stout blacksmelt |
| Bathylagus andriashevi | Kobyliansky, 1986 | Bathylagus andriashevi | Bathylagidae | |
| Bathylagus antarcticus | Günther, 1878 | Bathylagus antarcticus | Bathylagidae | Antarctic deepsea smelt |
| Bathylagus argyrogaster | Norman, 1930 | Bathylagoides argyrogaster | Bathylagidae | Silver deepsea smelt |
| Bathylagus atlanticus | Günther, 1878 | Genus Species | New species | |
| Bathylagus benedicti | Goode & Bean, 1896 | Bathylagus euryops | Bathylagidae | Goiter blacksmelt |
| Bathylagus bericoides | (Borodin, 1929) | Melanolagus bericoides | Bathylagidae | Bigscale deepsea smelt |
| Bathylagus borealis | Gilbert, 1896 | Bathylagus pacificus | Bathylagidae | Slender blacksmelt |
| Bathylagus callorhini | (Lucas, 1899) | Leuroglossus callorhini | Bathylagidae | |
| Bathylagus compsus | Cohen, 1958 | Dolicholagus longirostris | Bathylagidae | Longsnout blacksmelt |
| Bathylagus elongatus | Roule, 1916 | Bathylagus euryops | Bathylagidae | Goiter blacksmelt |
| Bathylagus euryops | Goode & Bean, 1896 | Bathylagus euryops | Bathylagidae | Goiter blacksmelt |
| Bathylagus glacialis | Regan, 1913 | Bathylagus antarcticus | Bathylagidae | Antarctic deepsea smelt |
| Bathylagus gracilis | Lönnberg, 1905 | Bathylagus gracilis | Bathylagidae | |
| Bathylagus greyae | Cohen, 1958 | Bathylagichthys greyae | Bathylagidae | Grey's deepsea smelt |
| Bathylagus longipinnis | Kobyliansky, 1985 | Bathylagichthys longipinnis | Bathylagidae | |
| Bathylagus longirostris | Maul, 1948 | Dolicholagus longirostris | Bathylagidae | Longsnout blacksmelt |
| Bathylagus microcephalus | Norman, 1930 | Melanolagus bericoides | Bathylagidae | Bigscale deepsea smelt |
| Bathylagus milleri | Jordan & Gilbert, 1898 | Pseudobathylagus milleri | Bathylagidae | Stout blacksmelt |
| Bathylagus nakazawai | Matsubara, 1940 | Lipolagus ochotensis | Bathylagidae | Eared blacksmelt |
| Bathylagus niger | Kobyliansky, 2006 | Bathylagus niger | Bathylagidae | |
| Bathylagus nigrigenys | Parr, 1931 | Bathylagoides nigrigenys | Bathylagidae | Blackchin blacksmelt |
| Bathylagus ochotensis | Schmidt, 1938 | Lipolagus ochotensis | Bathylagidae | Eared blacksmelt |
| Bathylagus pacificus | Gilbert, 1890 | Bathylagus pacificus | Bathylagidae | Slender blacksmelt |
| Bathylagus schmidti | (Rass, 1955) | Leuroglossus schmidti | Bathylagidae | Northern smoothtongue |
| Bathylagus stilbius | (Gilbert, 1890) | Leuroglossus stilbius | Bathylagidae | California smoothtongue |
| Bathylagus stilbius stilbius | (Gilbert, 1890) | Leuroglossus stilbius | Bathylagidae | California smoothtongue |
| Bathylagus tenuis | Kobyliansky, 1986 | Bathylagus tenuis | Bathylagidae | |
| Bathylagus wesethi | Bolin, 1938 | Bathylagoides wesethi | Bathylagidae | Snubnose blacksmelt |
| Bathylagus wesethy | Bolin, 1938 | Bathylagoides wesethi | Bathylagidae | Snubnose blacksmelt |