Otocinclus Temperature: Ideal Water Temp
Ideal: 72-79°F (22-26°C)
The Otocinclus is a tropical species. Aim for the middle of its range, around 76°F, and keep it steady — sudden swings stress fish more than a stable temperature.
You will need a heater to hold 72°F and up in most rooms — use roughly 3-5 watts per gallon plus a separate thermometer.
| Fahrenheit | 72-79°F |
|---|---|
| Celsius | 22-26°C |
| Sweet spot | ~76°F |
Frequently asked questions
What temperature do Otocinclus like?
72-79°F (22-26°C), ideally around 76°F.
Does a Otocinclus need a heater?
Yes — to reliably hold 72°F+ you need a heater in most homes.
More on this species: Otocinclus full care guide · tank size · temperature · pH & hardness · tank mates