Protomelas marginatus

{{Short description|Species of fish}}

{{Speciesbox

| image =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Konings, A. |author2=Kazembe, J. |date=2019 |title=Protomelas marginatus |volume=2019 |page=e.T61082A155051104 |doi=10.2305/IUCN.UK.2019-3.RLTS.T61082A155051104.en |access-date=14 November 2021}}

| taxon = Protomelas marginatus

| authority = (Trewavas, 1935)

| synonyms =

• Haplochromis marginatus Trewavas, 1935
• Cyrtocara marginata (Trewavas, 1935)
• Cyrtocara marginata marginata (Trewavas, 1935)
• Protomelas marginatus marginatus (Trewavas, 1935)
• Haplochromis marginatus vuae Trewavas, 1935
• Cyrtocara marginata vuae (Trewavas, 1935)
• Protomelas marginatus vuae (Trewavas, 1935)

}}

Protomelas marginatus is a species of cichlid endemic to Lake Malawi where it prefers shallow, vegetated waters. This species can reach a length of {{convert|16.6|cm|in}} TL. It can also be found in the aquarium trade.{{FishBase |genus= Protomelas|species= marginatus| month = April | year = 2013}}