Notolychnus

{{Short description|Genus of fishes}}

{{speciesbox

| name =

| status = LC

| status_system = IUCN3.1

| image =

| image_caption = '

| parent_authority = Fraser-Brunner, 1949

| taxon = Notolychnus valdiviae

| authority = (A. B. Brauer, 1904)

}}

Notolychnus valdiviae, the topside lanternfish, is a species of lanternfish found in the oceans worldwide. This species grows to a length of {{convert|6.3|cm|in}} TL.