Neolamprologus mustax

{{Short description|Species of fish}}

{{Use dmy dates|date=March 2023}}

{{Speciesbox

| image =

| image_caption = Neolamprologus mustax male

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Bigirimana, C. |date=2006 |title=Neolamprologus mustax |volume=2006 |page=e.T60611A12383825 |doi=10.2305/IUCN.UK.2006.RLTS.T60611A12383825.en}}

| taxon = Neolamprologus mustax

| authority = (Poll, 1978)

| synonyms = Lamprologus mustax Poll, 1978

}}

Neolamprologus mustax is a species of cichlid endemic to Lake Tanganyika. This species reaches a length of {{convert|9|cm|in}} TL. It can also be found in the aquarium trade.{{FishBase |genus= Neolamprologus|species= mustax| month = February | year = 2013}} Individuals are yellow in color and thus resemble juveniles of another cichlid species, Variabilichromis moorii, which may provide N. mustax with greater access to V. moorii feeding territories.{{cite journal|last=Ochi|first=Haruki|author2=Satoshi Awata|title=Resembling the Juvenile Colour of Host Cichlid Facilitates Access of the Guest Cichlid to Host Territory|journal=Behaviour|year=2009|volume=146|issue=6|pages=741–56|doi=10.1163/156853909x446181}}