La Plata Oto - (Otocinclus arnoldi)

🐟 La Plata Oto – Otocinclus arnoldi – Algae-Eating Freshwater Fish for Sale

The La Plata Oto – Otocinclus arnoldi for sale is a peaceful and efficient freshwater algae eater prized by aquarists for its gentle temperament, small size, and active cleaning abilities. Native to the waterways of South America, particularly the La Plata River basin, this species helps keep aquariums clean by grazing on algae and biofilm without harming plants.

Perfect for community tanks, the La Plata Oto is an excellent choice for aquarists looking for a natural algae-control solution that’s also fascinating to watch. Their constant grazing, schooling behavior, and calm nature make them a favorite in planted and nano aquarium setups.

🔎 Quick Facts – Otocinclus arnoldi

• 📛 Common Name: La Plata Oto
• 🔬 Scientific Name: Otocinclus arnoldi
• 🌍 Origin: La Plata River Basin, South America
• 🎨 Appearance: Slender body with light silver base color and dark lateral stripe
• 📏 Max Size: 1.5–2 inches (4–5 cm)
• 💎 Availability: Algae-eating freshwater fish for sale

😇 Behavior & Temperament

• 🐟 Peaceful, ideal for community tanks
• 🏘️ Schooling species – keep in groups of 6+ for best health and activity
• 🌿 Constant grazer of algae and biofilm

🏠 Tank Requirements

• 📦 Minimum Tank Size: 10+ gallons
• 🌿 Heavily planted aquarium preferred
• 🪵 Include driftwood and smooth rocks for algae growth
• 💡 Moderate lighting to encourage natural algae growth

💧 Water Parameters

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

🍽️ Diet

• 🌿 Primarily algae and biofilm
• 🥒 Supplement with blanched vegetables (zucchini, cucumber, spinach)
• 🍽️ Occasional sinking algae wafers and spirulina-based foods

🔍 Sexing

• 👨 Males: Slightly slimmer body shape
• 👩 Females: Rounder, fuller abdomen, especially when carrying eggs

📋 Overview Table – La Plata Oto Care

✨ Highlight:
Bring home the La Plata Oto – Otocinclus arnoldi for sale for a peaceful and effective algae-control solution. Perfect for planted aquariums and community setups, this South American algae eater adds beauty, utility, and charm to any freshwater tank.