Knight goby
Stigmatogobius sadanunidio
moderatesemi aggressivebottom swimmerGobiidae
- Tank length
- 18 cm7 in
- Start with
- 1
- Temperature
- 20–26 °C68–79 °F
- pH
- 7.5–8.5
- Adult size
- 6 cm2 in
- Lifespan
- 3–5 yrs
Prefers slightly brackish water and caves; territorial with other bottom-dwellers and will eat small shrimp.Prefers slightly brackish water and caves; territorial with other bottom-dwellers and will eat small shrimp.
Tank sizes
Good tankmates
Avoid with
- Black kuhli loach
No shared pH rangeNo shared pH range
- Brilliant rasbora
No shared pH rangeNo shared pH range
- Eastern rainbowfish
No shared pH rangeNo shared pH range
- Eigenmann's whiptail catfish
No shared pH rangeNo shared pH range
- Emerald eye rasbora
No shared pH rangeNo shared pH range
- Fly River rainbowfish
No shared pH rangeNo shared pH range
- Irian Jaya rainbowfish
No shared temperature rangeNo shared temperature range
Lambchop rasboraNo shared pH rangeNo shared pH range
- Melon barb
No shared pH rangeNo shared pH range
- New Guinea rainbowfish
No shared pH rangeNo shared pH range
- Panda garra
No shared pH rangeNo shared pH range
- Panda tetra
No shared pH rangeNo shared pH range
Data used by the planner
| Temperature | 20–26 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 7.5–8.5 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 5–20 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Origin | Coastal estuaries of South and South east Asia | 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 | sedentary | curated-v0 (needs expert review) · medium confidence |
| Swimming level | bottom | curated-v0 (needs expert review) · medium confidence |
| Temperament | semi aggressive | 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 | Yes | curated-v0 (needs expert review) · medium confidence |
| Lives in groups | No | curated-v0 (needs expert review) · medium confidence |
| Minimum group | 1 | curated-v0 (needs expert review) · medium confidence |
| Diet | carnivore | curated-v0 (needs expert review) · medium confidence |
| Lifespan (years) | 3–5 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 10 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | Yes | curated-v0 (needs expert review) · medium confidence |