Threespot Headstander - (Pseudanos trimaculatus)

🐟 Threespot Headstander – (Pseudanos trimaculatus) – Active South American Freshwater Fish for Sale

The Threespot Headstander (Pseudanos trimaculatus) is a lively and unique South American freshwater fish named for its habit of swimming at a head-down angle while grazing on surfaces. Found in rivers and floodplain waters of the Amazon Basin, it is easily recognized by its three distinct black spots along the sides of its streamlined silver-gold body. Peaceful yet active, the Threespot Headstander thrives in groups and makes a fascinating addition to large community aquariums with similarly sized tankmates.

🔎 Quick Facts – Threespot Headstander (Pseudanos trimaculatus)

• 📛 Common Name: Threespot Headstander
• 🔬 Scientific Name: Pseudanos trimaculatus
• 🌍 Origin: Amazon Basin (South America)
• 🎨 Appearance: Silver to golden body with three bold black spots; streamlined shape with upturned mouth
• 📏 Max Size: 6–8 inches (15–20 cm)
• 💎 Availability: Occasionally available; sought after for unique swimming posture

😇 Behavior & Temperament

• 🤝 Peaceful schooling species; best kept in groups of 5 or more
• 🪱 Constant grazer; feeds on algae, biofilm, and plant matter
• 🐟 Active midwater swimmer with distinctive head-down posture

🏠 Aquarium & Tank Requirements

• 📦 Minimum Tank Size: 55+ gallons for a group
• 🪵 Provide open swimming areas with driftwood and smooth rocks for grazing
• 🌿 Hardy plants or artificial décor recommended (may nip delicate plants)
• 💡 Moderate lighting to promote natural grazing behavior

💧 Water Parameters – Threespot Headstander Care

• 🌡️ Temperature: 75–82°F (24–28°C)
• ⚗️ pH: 6.0–7.5
• 💧 Hardness: Soft to moderately hard water

🍽️ Diet – Omnivorous Grazer

• 🌿 Algae wafers, spirulina flakes, blanched vegetables
• 🐟 High-quality flake or small sinking pellets
• 🦐 Occasional frozen foods such as bloodworms and brine shrimp
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📋 Threespot Headstander Overview Table

✨ Highlight:
The Threespot Headstander is an active, peaceful, and uniquely postured fish that brings constant motion and natural algae control to large community aquariums.