A small, peaceful algae-eating catfish, the Ecuador Oto is highly valued for its gentle nature and excellent tank-cleaning abilities. Native to Ecuador, it thrives in well-planted community tanks and is perfect for beginner and experienced aquarists alike.
Water Parameters:
| 🏷️ Feature | 📋 Details |
|---|---|
| 🆔 Common Name | Ecuador Oto |
| 🧬 Scientific Name | Otocinclus huaorani |
| 🌍 Origin | Ecuador, South America |
| 📏 Max Size | Up to 3.5 cm (1.4 inches) |
| 🕊️ Temperament | Peaceful, social |
| 🛁 Tank Size | 20 gallons or more |
| ⚗️ pH Range | 6.8–7.5 |
| 🌡️ Temperature | 72–79°F (22–26°C) |
| 🍽️ Diet | Algae, biofilm, sinking pellets, vegetables |
| 🐠 Ideal For | Planted community tanks, peaceful setups |
The Ecuador Oto (Otocinclus huaorani) is a small, peaceful algae-eating catfish from Ecuador. It thrives in planted community tanks and is best kept in groups to promote natural behavior.










