Diaphus problematicus

{{Short description|Species of fish}}

{{Speciesbox

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Hulley, P. |date=2015 |title=Diaphus problematicus |volume=2015 |page=e.T60470092A60793683 |doi=10.2305/IUCN.UK.2015-4.RLTS.T60470092A60793683.en |access-date=7 January 2024}}

| taxon = Diaphus problematicus

| authority = A. E. Parr, 1928

}}

Diaphus problematicus, the problematic lanternfish, is a species of lanternfish found worldwide.Hulley, P.A., 1990. Myctophidae. p. 398-467. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI; Paris; and UNESCO, Paris. Vol. 1.