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Metynnis fasciatus, representative adult in left-facing lateral AI illustration; not a photograph.

Metynnis fasciatus

Metynnis fasciatus

Adults retain clear stripes, unlike similar trade forms showing stripes only as juveniles.

Adults retain clear stripes, unlike similar trade forms showing stripes only as juveniles. Courting males may develop a black face.

Adult length
Up to 5.8 cm (standard length, without the tail fin)
Water temperature
22–30 °C
pH
5.5–7.5
Natural habitat
Native to the Capiuru River basin in the middle Amazon drainage.
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Same-species behaviour

Keep a group, in an aquarium longer than 150 cm for adults. Keep open swimming lanes; live aquatic plants may be rapidly eaten.

Diet and feeding

A plant-oriented omnivore that also accepts some animal foods.

Sources

www.fishbase.se ↗ 2026-10-25

www.interaquaristik.de ↗ 2026-10-23

PeekFish · Ornamental fish

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