PeekFishDiscover what makes each fish differentFishkeeping guides
EN ▾
Glass tetra — AI-generated side-view illustration

Glass tetra

Bario oligolepis

Red upper eyes, a netted silver body and a dark tail band

This deep-bodied fish resembles the red-eye tetra but grows larger.

Adult length
Up to 10 cm (standard length, without the tail fin)
Water temperature
22–26 °C
pH
6–8
Natural habitat
Favours counter-current areas in small creeks.

Reaches up to 12 cm TL or 10 cm SL. Do not plan adult space as if it were a 5 cm fish.

View comparison →

Appearance and identification

Resembles the red-eye tetra; the pale area beside the tail band is not diagnostic.

Same-species behaviour

Keep in a group of at least six; ten or more is better.

Space requirements

Provide plenty of room for an adult group.

Diet and feeding

Provide suitable dry food supplemented with frozen or live food.

Compatibility limits

Check aggression and predation risks before combining with large cichlids.

Aquarium environment

Suits a maintained planted setup with swimming room.

Sources

www.aquariumglaser.de ↗ 2026-10-22

www.fishbase.se ↗ 2026-10-25

researcharchive.calacademy.org ↗ 2026-10-22

ij-aquaticbiology.com ↗ 2026-10-22

www.seriouslyfish.com ↗ 2026-10-22

www.aquamazoniaexports.com ↗ 2026-10-22

www.sohu.com ↗ 2026-10-22

wcfish.waca.store ↗ 2026-10-22

PeekFish · Ornamental fish

Privacy and analytics