Electric blue johanni
Melanochromis johanni
moderateaggressivebottom swimmerCichlidae
- Tank length
- 54 cm21 in
- Start with
- 3
- Temperature
- 23–27 °C73–81 °F
- pH
- 7.6–9
- Adult size
- 9 cm4 in
- Lifespan
- 6–10 yrs
Males are blue and females orange; keep one male with several females among plenty of rock caves.Males are blue and females orange; keep one male with several females among plenty of rock caves.
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 | 23–27 | 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 · medium confidence |
| Hardness (dGH) | 10–30 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · low confidence |
| Origin | Southeastern Lake Malawi, East 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 | active | curated-v0 (needs expert review) · medium confidence |
| Swimming level | bottom | curated-v0 (needs expert review) · medium confidence |
| Temperament | 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 | omnivore | curated-v0 (needs expert review) · medium confidence |
| Lifespan (years) | 6–10 | curated-v0 (needs expert review) · low confidence |
| Months to adult size | 12 | curated-v0 (needs expert review) · low confidence |
| Safe with plants | No | curated-v0 (needs expert review) · medium confidence |