Bathystethus

{{Short description|Genus of ray-finned fishes}}

{{Automatic taxobox

| image = Bathystethus cultratus (Grey knifefish).gif

| image_caption = Grey Knifefish (B. cultratus)

| taxon = Bathystethus

| authority = T. N. Gill, 1893

| type_species = Cichla cultrata

| type_species_authority = Bloch & J. G. Schneider, 1801

| synonyms =

• Platystethus Günther, 1860 (pre-occupied)

| synonyms_ref = {{Cite book|last=Jordan|first=David Starr|url=https://www.biodiversitylibrary.org/item/268408|title=The genera of fishes: A contribution to the stability of scientific nomenclature|last2=Evermann|first2=Barton Warren|publisher=Stanford University|year=1923|location=California|pages=296}}

}}

Bathystethus is a genus of ray-finned fish native to the Pacific Ocean.