Plecostomus Suckermouth Catfish – Pterygoplichthys pardalis | Robust algae eater & peaceful large catfish

The Plecostomus suckermouth catfish ( Pterygoplichthys pardalis ) is one of the best-known and most useful bottom dwellers in aquariums. This peaceful large catfish originates from the river systems of South America and impresses with its attractive pattern of dark brown and light spots – a true classic among algae eaters.

The Pterygoplichthys pardalis is robust, long-lived, and extremely effective at controlling algae. It reliably keeps roots, stones, and aquarium glass clean without damaging plants. Its peaceful nature makes it ideal for keeping with other calm species.

🌿 Characteristics & Attitude:
🐠 Fish size: M (6–7 cm, juvenile)
🌎 Origin: South America (Brazil, Peru, Colombia) – Wild caught/Captive bred
🌡️ Temperature: 24-30°C
💧 pH value: 6.0–7.8
⚖️ Total hardness: up to 20 °dGH
🐟 Social behavior: Peaceful, but territorial as an adult
🌾 Aquarium: From 300 liters, with powerful filtration, roots, hiding places & free swimming space

🍽️ Feeding:
The Plecostomus suckermouth catfish is an omnivore with a preference for plants. It eats algae, biofilm, and plant-based foods such as spirulina, seaweed wafers, vegetable chips, blanched cucumber, zucchini, or spinach. It also accepts frozen foods like brine shrimp or cyclops.

💡 Tip:
Since Pterygoplichthys pardalis can grow up to 35 cm long, a large, well-filtered aquarium is essential. Roots are important for digestion and also serve as hiding places. A gentle current and regular water changes promote its well-being.

👉 Conclusion:
The Plecostomus suckermouth catfish ( Pterygoplichthys pardalis ) is a peaceful, robust algae eater with a distinctive pattern – ideal for large, naturalistic South American aquariums.