Green Oto - (Hisonotus aky)

🐟 Green Oto (Hisonotus aky)

The Green Oto is a small, peaceful armored catfish native to South America. Known for its delicate greenish coloration and excellent algae-eating habits, it is a popular choice for nano tanks and planted aquariums.

🔍 Quick Facts

• 🆔 Common Name: Green Oto
• 🧬 Scientific Name: Hisonotus aky
• 🧬 Family: Loricariidae
• 🌎 Origin: South America — Paraguay and Paraná River basins
• 📏 Max Size: Up to 1.5 inches (4 cm)

🕊️ Behavior & Temperament

• 🕊️ Peaceful and social
• 🐟 Active algae grazer
• 🤝 Best kept in groups of 4 or more
• 🏞️ Prefers well-planted tanks with plenty of hiding places

🏡 Tank Requirements

• 🛁 Minimum Tank Size: 10 gallons+
• 🪵 Provide driftwood, plants, and smooth rocks
• 💨 Moderate filtration and stable water parameters

Water Parameters:

• 🌡️ Temperature: 72–79°F (22–26°C)
• ⚗️ pH: 6.5–7.5
• 💧 Soft to moderately hard water

🍽️ Diet

• Omnivorous — algae, biofilm, and sinking pellets

📊 Overview Table

📝 Snippet

The Green Oto (Hisonotus aky) is a tiny, peaceful algae-eating catfish perfect for small, planted tanks. Its social nature means it thrives in groups and adds gentle activity to any nano aquarium.