Pacific blue-eye
Pseudomugil signifer
- Tank length
- 27 cm11 in
- Group
- 6+
- Temperature
- 23–28 °C73–82 °F
- pH
- 6–8
- Adult size
- 4.5 cm1.8 in
- Lifespan
- 2–3 yrs
Tolerates cooler and slightly brackish water; keep a group with more females than males in a tank with open top-water swimming room.Tolerates cooler and slightly brackish water; keep a group with more females than males in a tank with open top-water swimming room.
Tank sizes
Good tankmates
Avoid with
- African knifefish
African knifefish may eat Pacific blue eyeAfrican knifefish may eat Pacific blue eye
- African pike
African pike may eat Pacific blue eyeAfrican pike may eat Pacific blue eye
- Alligator gar
Alligator gar may eat Pacific blue eyeAlligator gar may eat Pacific blue eye
- Antenna ray
Antenna ray may eat Pacific blue eyeAntenna ray may eat Pacific blue eye
- Arapaima
Arapaima may eat Pacific blue eyeArapaima may eat Pacific blue eye
- Asian arowana
Asian arowana may eat Pacific blue eyeAsian arowana may eat Pacific blue eye
- Asian upside-down catfish
Asian upside down catfish may eat Pacific blue eyeAsian upside down catfish may eat Pacific blue eye
- Australian pearl arowana
Australian pearl arowana may eat Pacific blue eyeAustralian pearl arowana may eat Pacific blue eye
- Barred bichir
Barred bichir may eat Pacific blue eyeBarred bichir may eat Pacific blue eye
- Black bullhead
Black bullhead may eat Pacific blue eyeBlack bullhead may eat Pacific blue eye
- Black diamond cichlid
Black diamond cichlid may eat Pacific blue eyeBlack diamond cichlid may eat Pacific blue eye
- Brown bullhead
Brown bullhead may eat Pacific blue eyeBrown bullhead may eat Pacific blue eye
Data used by the planner
| Temperature | 23–28 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 6–8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 5–15 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low confidence |
| Origin | Coastal streams of eastern Australia | curated-v0 (needs expert review) · low confidence |
| Beginner friendly | Yes | curated-v0 (needs expert review) · medium confidence |
| Care level | easy | 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) | 2–3 | 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 |