Fish comparison
Cockatoo Dwarf Cichlid vs Reticulated Hillstream Loach
How the Cockatoo Dwarf Cichlid and Reticulated Hillstream Loach compare on care, size, water and temperament, and which fish suits your tank.
By Mike ElmiraUpdated
TL;DR, Cockatoo Dwarf Cichlid vs Reticulated Hillstream Loach
The Cockatoo Dwarf Cichlid and the Reticulated Hillstream Loach come up together a lot when people are choosing a fish, and they are close enough to weigh side by side. Both are happy somewhere around 24 to 24 °C and pH 6.5 to 7.5, so a single tank can suit either one. Neither is harder than the other to keep, so the choice comes down to look and stocking rather than skill. For a calm community the gentler Reticulated Hillstream Loach slots in more easily.
Group compatibility overview
Good fit
Workable as-is, only minor advisories to plan around.
1 warning · 1 note
Temperature
- Cockatoo Dwarf Cichlid24–28 °C
- Reticulated Hillstream Loach20–24 °C
pH
- Cockatoo Dwarf Cichlid5.5–7.5
- Reticulated Hillstream Loach6.5–7.5
Hardness
- Cockatoo Dwarf Cichlid2–15 dGH
- Reticulated Hillstream Loach4–15 dGH
What to plan for
- Tight temperature windowThe overlap is only 24–24 °C. Heater stability matters more than usual; consider an external controller.
- 67% of your fish swim in the bottomHeavy concentration in a single zone. Spreading stocking across all three levels makes the tank read fuller for the same bioload.
Full attributes
Every parameter, side by side| Parameter |  FishCockatoo Dwarf CichlidApistogramma cacatuoides |  FishReticulated Hillstream LoachSewellia lineolata |
|---|---|---|
| Category | Fish | Fish |
| Origin | Upper Amazon basin, Peru & Brazil | Central and southern Vietnam |
| Family | Cichlidae | Gastromyzontidae |
| Temperature | 24–28 °C | 20–24 °C |
| pH | 5.5–7.5 | 6.5–7.5 |
| Hardness (dGH) | 2–15 | 4–15 |
| Flow rate | Low | Very High |
| Min tank | 75 L (pair) | 75 L |
| Adult size | 6–8 cm (male), 4–5 cm (female) | 5–7 cm |
| Difficulty | 3 / 5 | 3 / 5 |
| Lifespan | 3–5 yrs | 8–10 yrs |
| Diet | Carnivore | Herbivore (biofilm and algae) |
| Water column | Mid to Bottom | Bottom (sticks to surfaces) |
| Schooling | Harem (1 male, 2–3 females) | Loose group |
| Plant safe | Yes | Yes |
| Shrimp safe | Risky with dwarf shrimp | Yes |
Frequently asked questions
Direct answers to the questions search engines and AI assistants surface most often about this species.
Can you keep Cockatoo Dwarf Cichlid and Reticulated Hillstream Loach together?
Yes. Their temperature and pH ranges overlap around 24 to 24 °C and pH 6.5 to 7.5, so one set of water conditions keeps both comfortable. Match group sizes and cover the usual planted-tank basics and they share a tank fine.
Which is easier to keep, the Cockatoo Dwarf Cichlid or the Reticulated Hillstream Loach?
They sit at the same care level, both middle-of-the-road, so neither is the obvious beginner pick. The decision is really about the look you're after.
Do Cockatoo Dwarf Cichlid and Reticulated Hillstream Loach need the same water?
Close to it. Aim for 24 to 24 °C and pH 6.5 to 7.5 and you're in the shared sweet spot for both. Full ranges are in the table above.
What's the main difference between the Cockatoo Dwarf Cichlid and the Reticulated Hillstream Loach?
Temperament is the big one. The Cockatoo Dwarf Cichlid is territorial when breeding and the Reticulated Hillstream Loach is peaceful, which changes who you can house them with.