Pisces

Aquarium fish - Letter O

17profiles available for this selection

Find a species compatible with your aquarium by comparing adult size, minimum volume, temperature, pH, water type and behavior.

Odontocharacidium aphanes

Size2 cmTemp.21 - 27 °C

Odontocharacidium sp. aff. aphanes

Green dwarf tetrager

Size4 cmTemp.23 - 29 °C

Odontostilbe fugitiva

Fugitive tetra

Size5 cmTemp.21 - 27 °C

Odontostilbe piaba

Tetra Piaba

Size5 cmTemp.19 - 28 °C

Odontostilbe pulchra

Pulchra tetra

Size4 cmTemp.21 - 26 °C

Odonus niger

Blue ballist

Size50 cmVolume500 LTemp.23 - 27 °C

Opistognathus aurifrons

OPISTOGNATHE at Front Doré

Size10 cm

Oryzias melastigma

Killi of Java

Size4 cm

Osphronemus goramy

Giant gourami

Size60 cmVolume200 LTemp.24 - 29 °C

Ossubtus xinguense

Pacou du Rio Xingu, Eagle beak pacou

Size15 cmTemp.21 - 26 °C

Osteocheilus hasselti

Java carp

Size30 cm

Osteoglossum bicirrhosum

Arowana

Size100 cmVolume1500 LTemp.23 - 27 °C

Ostracion cubicus

Yellow

Size45 cm

Ostracion meleagris

Guinea fowl

Size20 cm

Ostraction cornutus

Yellow

Size55 cmVolume65 LTemp.19 - 30 °C

Otocinclus affinis

Dwarf Otocinclus

Size5 cmVolume50 LTemp.19 - 27 °C

Oxycirrhites typus

Scotlers

Size13 cmVolume400 L

Continue exploring

Before choosing a fish, check water, volume, related species and diseases.

Understand waterConnect pH, temperature, hardness and species choices.Explore familiesCompare related species before opening a profile.Fish diseasesIdentify a symptom if behavior changes.Aquarium plantsComplete the population with suitable living decor.