Blue-back blue-eye
Pseudomugil cyanodorsalis
- Tank length
- 18 cm7 in
- Group
- 6+
- Temperature
- 23–28 °C73–82 °F
- pH
- 6–8
- Adult size
- 3 cm1 in
- Lifespan
- 1–3 yrs
Tolerates hard to brackish water; keep a group with tiny, gentle tankmates only.Tolerates hard to brackish water; keep a group with tiny, gentle tankmates only.
Tank sizes
Good tankmates
Avoid with
- African clawed frog
African clawed frog may eat Blue back blue eyeAfrican clawed frog may eat Blue back blue eye
- Abei puffer
Abei puffer may eat Blue back blue eyeAbei puffer may eat Blue back blue eye
- African butterflyfish
African butterflyfish may eat Blue back blue eyeAfrican butterflyfish may eat Blue back blue eye
- African knifefish
African knifefish may eat Blue back blue eyeAfrican knifefish may eat Blue back blue eye
- African pike
African pike may eat Blue back blue eyeAfrican pike may eat Blue back blue eye
- Alligator gar
Alligator gar may eat Blue back blue eyeAlligator gar may eat Blue back blue eye
- Amazon toadfish
Amazon toadfish may eat Blue back blue eyeAmazon toadfish may eat Blue back blue eye
- Antenna ray
Antenna ray may eat Blue back blue eyeAntenna ray may eat Blue back blue eye
- Arapaima
Arapaima may eat Blue back blue eyeArapaima may eat Blue back blue eye
- Arrowhead puffer
Arrowhead puffer may eat Blue back blue eyeArrowhead puffer may eat Blue back blue eye
- Asian arowana
Asian arowana may eat Blue back blue eyeAsian arowana may eat Blue back blue eye
- Asian upside-down catfish
Asian upside down catfish may eat Blue back blue eyeAsian upside down catfish may eat Blue back blue eye
Data used by the planner
| Temperature | 23–28 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low confidence |
|---|---|---|
| pH | 6–8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 5–15 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Origin | Northern Australian coastal mangroves | curated-v0 (needs expert review) · low confidence |
| Beginner friendly | No | curated-v0 (needs expert review) · medium confidence |
| Care level | moderate | curated-v0 (needs expert review) · medium confidence |
| Activity | active | curated-v0 (needs expert review) · medium confidence |
| Swimming level | top | curated-v0 (needs expert review) · medium confidence |
| Temperament | peaceful | curated-v0 (needs expert review) · medium confidence |
| Nips fins | No | curated-v0 (needs expert review) · medium confidence |
| Long fins | No | curated-v0 (needs expert review) · medium confidence |
| Territorial | No | curated-v0 (needs expert review) · medium confidence |
| Lives in groups | Yes | curated-v0 (needs expert review) · medium confidence |
| Minimum group | 6 | curated-v0 (needs expert review) · medium confidence |
| Diet | omnivore | curated-v0 (needs expert review) · medium confidence |
| Lifespan (years) | 1–3 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 6 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | Yes | curated-v0 (needs expert review) · medium confidence |