Fin's Fish Guide
The Straightjaw petrochromis (Petrochromis orthognathus) is a freshwater fish of the family Cichlidae that grows up to 17 cm.
Description
The straightjaw petrochromis is a cichlid endemic to Lake Tanganyika in East Africa. The species grows to about 16 cm and inhabits the shallow, rocky zone of the lake, where it occurs solitarily or in groups. With a broad, straight dentition it scrapes the algal growth (aufwuchs) from the rocks; its long gut is adapted to this plant diet. As a maternal mouthbrooder the female carries the eggs and young in her mouth. Petrochromis species are strongly territorial around their grazing patches on the reef. The species is harmless to humans.
Frequently asked questions
How do you recognise the Straightjaw petrochromis?
The Straightjaw petrochromis has a flattened, disc-shaped body, is mainly brown and shows a plain pattern. Broad, straight dentition and a long gut for scraping algal growth off rocks; territorial mouthbrooder.
Where does the Straightjaw petrochromis live?
The Straightjaw petrochromis lives in fresh water and is mostly found around mixed bottom. Endemic to Lake Tanganyika in East Africa; shallow rocky zone.
How big does the Straightjaw petrochromis get?
The Straightjaw petrochromis grows to a maximum of about 17 cm.
Is the Straightjaw petrochromis dangerous to humans?
No, the Straightjaw petrochromis is harmless to humans. None required: this species is harmless to humans.
Is the Straightjaw petrochromis edible?
The Straightjaw petrochromis is not usually eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Petrochromis
More from the family Cichlidae
Want the complete picture on the Straightjaw petrochromis?
Point your camera at the fish and Fin names the species in seconds. Free, and the Straightjaw petrochromis is one of 12,519 species in the app.