Fin's Fish Guide
The Plain bonito (Orcynopsis unicolor) is a saltwater fish of the family Scombridae that grows up to 130 cm.
Eastern Atlantic and the Mediterranean Sea, pelagic in coastal water above the continental shelf.
Description
The plain bonito is a streamlined, fast mackerel relative of the family Scombridae reaching about 1.3 metres. The torpedo-shaped body has a blue-black back and silvery flanks; unlike true bonitos it lacks the oblique or lengthwise stripes, hence 'plain'. Small separate finlets stand before the crescent-shaped tail. The species lives pelagically in coastal water above the continental shelf in the eastern Atlantic and the Mediterranean. In fast schools it chases schooling fish such as sardines and anchovy, supplemented with squid. It is a valued commercial fish and a fast, sporting catch for sea anglers; its flesh is dark and flavourful.
Frequently asked questions
How do you recognise the Plain bonito?
The Plain bonito has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Streamlined, fast mackerel with a blue-black back, silvery flanks without stripes and small separate fins (finlets) before the tail.
Where does the Plain bonito live?
The Plain bonito lives in the sea (marine waters) and is mostly found around open water. Eastern Atlantic and the Mediterranean Sea, pelagic in coastal water above the continental shelf.
How big does the Plain bonito get?
The Plain bonito grows to a maximum of about 130 cm. On average the species is around 90 cm.
Is the Plain bonito dangerous to humans?
No, the Plain bonito is harmless to humans. None required: this species is harmless to humans.
Is the Plain bonito edible?
Yes, the Plain bonito is a highly prized food fish.
Easily confused with
These species look like the Plain bonito and live in the same waters.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
More from the family Scombridae
Want the complete picture on the Plain bonito?
Point your camera at the fish and Fin names the species in seconds. Free, and the Plain bonito is one of 12,519 species in the app.