Tropheops lucerna

{{Short description|Species of fish}}

{{Speciesbox

| image =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn | author1 = Konings, A. | author2 = Kasembe, J | name-list-style = amp | year = 2018 | title = Pseudotropheus lucerna | volume = 2018 | page = e.T61170A47238550 | doi = 10.2305/IUCN.UK.2018-2.RLTS.T61170A47238550.en }}

| taxon = Tropheops lucerna

| authority = Trewavas, 1935

| synonyms =

Pseudotropheus lucerna Trewavas, 1935

}}

Tropheops lucerna is a species of cichlid endemic to Lake Malawi where it is found at depths of {{convert|2|to|4|m|ft}} in beds of Vallisneria in bays. This species can reach a length of {{convert|13.5|cm|in}} TL. It can also be found in the aquarium trade.{{cite book |author=Konings, A.F. | year = 2016 | title = Malaŵi Cichlids in their natural habitat | edition = 5 | publisher = Cichlid Press | page = 447 | isbn = 978-1-932892-23-9 }} It feeds by brushing loose strands of algae off of rocks, sand and the leaves of macrophytes.{{FishBase|Tropheops|lucerna|month=October|year=2018}}