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Protomelas pleurotaenia

Protomelas pleurotaenia

Fishes › Cichlids (Cichliformes) › Cichlidae (Cichlids)

Protomelas pleurotaenia is a species of cichlid endemic to Lake Malawi where it is only known from Monkey Bay and Nkhata Bay where it is known to occur from the surface to 10 metres (33 ft).

Aquarium hobby
Experience: Intermediate
FamilyCichlids
Adult lengthup to 5.6 in
WaterFreshwater

Care at a glance

Species-specific aquarium care

  • Tank: At least 30 in long and 12 in front to back for one adult (adults commonly reach about 5.6 in / 14.1 cm).
  • Water: Freshwater.
  • Layout: Uses both the bottom and open water: give open swimming space plus cover near the substrate.
  • Diet: A predator: feed meaty foods sized to its mouth (frozen fish, shrimp, worms); it will eat tankmates that fit in its mouth. FishBase classes it as a carnivore.

Calculated from this species' own FishBase record: tank size from its typical adult length and swimming zone, water values from its recorded ranges. The group guide below fills in general care.

Care guide

Species care notes

  • Tank: a base of at least 47 × 18 in (roughly 54 US gallons); space needed is rated “large tank”.
  • Water: hard, alkaline water, 75–82 °F, pH 7.6–8.8, 10–25 dGH.
  • Behaviour: temperament territorial.
  • Difficulty: Moderate (Seriously Fish rating).

Short excerpts from the species profile:

  • Setup: “Much of the aquarium should contain piles of rocks arranged to form caves with small areas of open water between.”
  • Diet: “It will accept most foods offered but live and frozen varieties should form the bulk of the diet.”
  • Tankmates: “A gentle species which is not suited to the boisterous mbuna community although it does become territorial when breeding.”
  • Breeding: “No information available regarding captive breeding.”

From the Seriously Fish profile for this species, which has the full habitat, maintenance, diet, behaviour and breeding write-up 167

Group care guide

Lake Malawi peacocks and haps

Applies to most species in this group. Habitat: Open water and sand of Lake Malawi. Individual species can differ, so compare with the species numbers above and the linked sources.

Housing & setup

  • Hard, alkaline water (pH 7.8–8.6), a long tank (5 ft+ for larger haps) with open sand and some rock.
  • Generally less aggressive than mbuna; males color up best with several females.

Sources 117119164118272

Climate & lighting

Water76–82°F

Sources 117119164118272

Diet

  • For Aulonocara stuartgranti, use small prepared foods with some vegetable content and varied small live/frozen invertebrates. Match other haps to their own feeding ecology.

Sources 117119164118272

Health watch

  • Do not diagnose bloat from a label such as “mbuna-style food”; Aulonocara stuartgranti diets can include vegetable foods. Match food and tankmates to the species.

Sources 117119164118272

Understanding the animal

No real photograph of this species is freely available yet. The only images we found were scientific illustrations or maps, so none is shown. It stays on the site because there is evidence it is kept (see “Kept in captivity?”), but it is rarely kept or rarely photographed. If you keep one and can share a photo, we would love to add it.
About this animal

About this animal

This species can reach a length of 14.1 centimetres (5.6 in) TL. This species can also be found in the aquarium trade.

Quoted from the Wikipedia article “Protomelas pleurotaenia” (CC BY-SA 4.0) 174

In the wild

In the wild

From this species’ own FishBase record (habitat, bottom type, water and breeding data), not its family. Good care copies these conditions.1

Where it livesLives in freshwater. Uses both the bottom and open water. Found in vegetated areas between rocks and sand. Feeds on invertebrates that it locates in the sand by blowing into the upper sediment layer.
Water it lives inFreshwater, depth 0–10 m.
ClimateTropical climate.
Wild dietHunting macrofauna (predator).
  1. FishBase species summary: Protomelas pleurotaenia
From the sources

From the sources

Quoted from the matching sections of reputable sources for this exact species. Specialist databases are used first; Wikipedia (community-edited, CC BY-SA 4.0) only fills gaps. Other sources are short credited quotes.

Where it livesHome ranges Population dynamics Growth parameters Max. ages / sizes Length-weight rel. Length-frequencies Mass conversion Recruitment Abundance Life cycle Reproduction Maturity Maturity/Gills rel. — FishBase
BiologyFound in vegetated areas between rocks and sand. Feeds on invertebrates that it locates in the sand by blowing into the upper sediment layer. — FishBase

Data and studies

The numbers

The numbers

Each bar is what one source reports. Where several sources weigh in, the dashed gold band marks their average.

Adult length

Average of sources5.5in
FishBase 1645.6
Seriously Fish species profiles 1675.5

Maximum recorded length. Measured as total length. Fish in home aquariums often stay smaller than wild records.

Water temperature

Reported75–82°F
Seriously Fish species profiles 16775–82

Range the species tolerates; aim for the middle.

pH

Reported7.6–8.8
Seriously Fish species profiles 1677.6–8.8

Water hardness

Reported10–25dGH
Seriously Fish species profiles 16710–25

Minimum tank footprint

Reported47in
Seriously Fish species profiles 16747

Seriously Fish recommends a tank base of at least 47 × 18 in (about 54 US gallons).

Sources for this sheet

  1. FishBase (Froese & Pauly, eds.), version 24.07 Peer-reviewed researchThe global scientific database on fishes, maintained by a consortium of research institutions; every value is referenced.
  2. Seriously Fish species profiles Experienced keeper or breederLong-running aquarium reference written and peer-checked by experienced fishkeepers and ichthyologists; each profile covers habitat, tank size, water, diet, behaviour and breeding.
  3. Merck Veterinary Manual: Management of aquarium fish Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
  4. Merck Veterinary Manual: Types and features of aquatic systems Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
  5. Merck Veterinary Manual: Nutritional diseases of fish Zoo, university or veterinaryThe Merck Veterinary Manual: a standard veterinary reference written and reviewed by veterinary specialists.
  6. Seriously Fish — Aulonocara stuartgranti Zoo, university or veterinaryAdded in the 2026 source-checked care-guide review.
  7. Wikipedia (species article) Community referenceFree encyclopedia; useful overviews with their own citations. Intro text is quoted under CC BY-SA 4.0.