High Fin Corydoras (Corydoras robineae)

The High Fin Corydoras is a stunning and peaceful bottom-dwelling catfish known for its elegant elongated dorsal fin, attractive patterning, and active social behaviour. A beautiful addition to planted community aquariums, this species combines the charm of a traditional Corydoras with a more distinctive appearance that makes it stand out in any freshwater setup.

Unlike many bottom feeders, Corydoras are highly active throughout the day and are often seen exploring the aquarium floor in groups. They use their sensitive barbels to search through the substrate for food, constantly investigating their surroundings and creating entertaining natural behaviour for aquarium keepers.

The High Fin Corydoras originates from the Rio Negro basin in Brazil, where it inhabits slow-moving streams, flooded forest areas, and shallow waters with soft, acidic conditions. These environments are typically rich in leaf litter, submerged roots, and aquatic vegetation, providing plenty of cover and feeding opportunities.

With their peaceful nature, attractive appearance, and manageable size, High Fin Corydoras are an excellent choice for both beginner and experienced aquarists.

🌿 Why Choose High Fin Corydoras?

🐟 Elegant extended dorsal fin for a unique appearance
🌿 Excellent choice for planted aquariums
👥 Peaceful shoaling fish with fascinating social behaviour
🧹 Helps keep the substrate active by scavenging leftover foods
💪 Hardy and adaptable when kept correctly
✨ Attractive contrast of dark markings and metallic tones
🏡 Ideal for community aquariums
❤️ Entertaining and active throughout the day

📏 Care Requirements

🧬 Scientific Name: Corydoras robineae
📛 Common Name: High Fin Corydoras, Robine’s Corydoras
🏠 Tank Size: 60L+ recommended for a small group
📏 Adult Size: Approximately 5–6cm
🌡️ Temperature: 22–26°C
⚗️ pH Range: 5.5–7.5
💧 Water Hardness: Soft to moderately hard water (2–15 dGH preferred)
🧘 Temperament: Very peaceful
🍽️ Diet: Sinking catfish pellets, algae wafers, frozen bloodworm, brine shrimp, daphnia, and other small meaty foods
👥 Group Size: Minimum 6 recommended; larger groups encourage more natural behaviour

🏡 Aquarium Setup

High Fin Corydoras thrive in mature, well-planted aquariums with plenty of hiding places and open areas for foraging.

A suitable setup should include:

🌿 Dense aquatic plants
🪵 Driftwood and natural decorations
🍂 Leaf litter for a more natural environment
🏖️ Fine sand substrate
💧 Gentle filtration with good oxygenation

A soft sand substrate is highly recommended, as Corydoras constantly sift through the bottom using their delicate barbels. Sharp gravel can damage these sensitive feeding organs and may lead to long-term health issues.

Although they spend most of their time near the bottom, Corydoras are also known to dash to the surface occasionally to gulp air. This is a natural adaptation that allows them to survive in oxygen-poor waters in the wild.

Good water quality is essential, with regular maintenance and stable parameters helping them remain active and healthy.

🐠 Compatibility

High Fin Corydoras are one of the best choices for peaceful community aquariums.

Suitable tank mates include:

✅ Small tetras
✅ Rasboras
✅ Peaceful gouramis
✅ Livebearers
✅ Small peaceful barbs
✅ Other Corydoras species
✅ Freshwater shrimp (with caution around young shrimp)

Avoid keeping them with:

❌ Large predatory fish
❌ Aggressive cichlids
❌ Fin-nipping species
❌ Large territorial bottom dwellers
❌ Fish that require very different water conditions

Their peaceful nature makes them excellent companions for planted community tanks where they can form part of a diverse aquatic ecosystem.

🍽️ Feeding & Behaviour

High Fin Corydoras are omnivorous micro-predators that spend much of their time searching the substrate for food.

Their diet should include a mixture of:

🟤 High-quality sinking pellets
🩸 Frozen bloodworm
🦐 Brine shrimp
🪱 Daphnia
🌱 Vegetable-based foods
🐟 Specialist Corydoras tablets

Although often considered a "clean-up fish", they should never rely solely on leftover food. A dedicated feeding routine is important to ensure they receive adequate nutrition.

High Fin Corydoras are most active when kept in groups. Larger shoals create confidence, encourage natural schooling behaviour, and make the fish much more visible within the aquarium.

⚠️ Important Notes

High Fin Corydoras are a social species and should not be kept alone. A minimum group of six is recommended, although larger groups will display much more natural behaviour.

When introducing Corydoras to a new aquarium, avoid sudden changes in water chemistry. They are sensitive to poor water quality and high levels of ammonia or nitrite.

Their barbels are a good indicator of health. Damaged or shortened barbels often indicate unsuitable substrate, poor water conditions, or bacterial issues.

A secure lid is recommended, as Corydoras can occasionally jump when startled or during water quality issues.

High Fin Corydoras are also known for their peaceful interactions with tank mates and their charming habit of resting together on plants, wood, or open areas of the substrate.