Marlier's julie
Julidochromis marlieri
moderatesemi aggressivebottom swimmerCichlidae
- Tank length
- 120 cmabout 4 ft (47 in)
- Start with
- 1
- Temperature
- 22–25 °C72–77 °F
- pH
- 7.6–9
- Adult size
- 12 cm5 in
- Lifespan
- 7–10 yrs
Grows larger than other julies and pairs become very aggressive to others in their rockwork; plan a long, rocky tank.Grows larger than other julies and pairs become very aggressive to others in their rockwork; plan a long, rocky tank.
Tank sizes
Good tankmates
Avoid with
- Banded gourami
No shared pH rangeNo shared pH range
- Bandit cory
No shared pH rangeNo shared pH range
- Black kuhli loach
No shared pH rangeNo shared pH range
Black neon tetraNo shared pH rangeNo shared pH range
- Black phantom tetra
No shared pH rangeNo shared pH range
- Blackline rasbora
No shared pH rangeNo shared pH range
- Bleeding heart tetra
No shared pH rangeNo shared pH range
- Blind cave tetra
No shared pH rangeNo shared pH range
- Bloodfin tetra
No shared pH rangeNo shared pH range
- Blue acara
No shared pH rangeNo shared pH range
- Blue emperor tetra
No shared pH rangeNo shared pH range
- Blue lyretail
No shared pH rangeNo shared pH range
Data used by the planner
| Temperature | 22–25 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
|---|---|---|
| pH | 7.6–9 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04; agrees with FishBase (fishbase.se), retrieved 2026-10-04 · medium confidence |
| Hardness (dGH) | 10–30 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium confidence |
| Origin | Lake Tanganyika, Africa | 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 | moderate | 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) | 7–10 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 12 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | Yes | curated-v0 (needs expert review) · medium confidence |
| Minimum tank length | 120 | curated-v0 (needs expert review) · medium confidence |