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Largetooth petrochromis (Petrochromis polyodon) — Cichlidae

Largetooth petrochromis

Petrochromis polyodon
Family: Cichlidae
LC · Least Concern

The Largetooth petrochromis (Petrochromis polyodon) is a freshwater fish of the family Cichlidae that grows up to 21 cm.

Length
21 cm
Water
Freshwater
Diet
Herbivore
Behaviour
Small groups
Body shape
Flat / disc-shaped
Substrate
Mixed bottom
Danger
Harmless
Range
Endemic to Lake Tanganyika in East Africa.
Edibility
Commonly eaten

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Description

Petrochromis polyodon is a cichlid endemic to Lake Tanganyika in East Africa. The species lives over rocky bottoms, singly or in loose groups, and scrapes the algal layer (aufwuchs) from stones with a broad mouth set with many small teeth. The fish reaches about 21 cm and has a stocky, powerful body. Like many Tanganyika cichlids it is a mouthbrooder: the female broods the eggs and young in her mouth. The species is prized by advanced cichlid keepers and is fished locally.

Frequently asked questions

How do you recognise the Largetooth petrochromis?

The Largetooth petrochromis has a flattened, disc-shaped body. Broad mouthparts with many small teeth for scraping algae off rocks; mouthbrooder.

Where does the Largetooth petrochromis live?

The Largetooth petrochromis lives in fresh water and is mostly found around mixed bottom. Endemic to Lake Tanganyika in East Africa.

How big does the Largetooth petrochromis get?

The Largetooth petrochromis grows to a maximum of about 21 cm.

Is the Largetooth petrochromis dangerous to humans?

No, the Largetooth petrochromis is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Largetooth petrochromis edible?

Yes, the Largetooth petrochromis is commonly eaten.

More photos

Largetooth petrochromis (Petrochromis polyodon) — Cichlidae — 2
SAIAB (CC BY 4.0) via GBIF — SAIAB
Largetooth petrochromis (Petrochromis polyodon) — Cichlidae — 3
iNaturalist ((c) Hans Hillewaert, some rights reserved (CC BY-NC-SA))
Largetooth petrochromis (Petrochromis polyodon) — Cichlidae — 4
iNaturalist ((c) Friedrich Rosian, some rights reserved (CC BY-NC))
Largetooth petrochromis (Petrochromis polyodon) — Cichlidae — 5
iNaturalist ((c) koblmuel, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Largetooth petrochromis sourced
Scientific name
Petrochromis polyodon
Family
Cichlidae

Appearance

Size class
Medium verified
Max length (cm)
21.0 verified
Body shape
Flat / disc-shaped sourced
Tail shape
Straight inferred
Mouth position
Inferior (downward) inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
Endemic to Lake Tanganyika in East Africa. inferred
Origin
Native sourced

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Algae (aufwuchs) from rocks sourced
Social behaviour
Small groups inferred
Territorial
Yes inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Broad mouthparts with many small teeth for scraping algae off rocks; mouthbrooder. sourced

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Petrochromis

More from the family Cichlidae

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