Minihai – Ariopsis seemanni

The mini shark (Ariopsis seemanni), also known as the Colombian shark catfish or shark-fin catfish, is a fascinating wild-caught specimen from Central and South America. With its streamlined body, distinctive dorsal fin, and elegant swimming style, it strongly resembles a true shark. Even as a juvenile, it impresses with its silvery-grey coloration with dark fin edges and active, free-swimming behaviour.

The Ariopsis seemanni is a migratory catfish that lives in both fresh and brackish water in the wild. Juveniles can temporarily be kept in freshwater, but as they grow older, they require slightly saline water. It is peaceful, active, and loves open swimming space – ideal for experienced aquarists looking for something special.

🌿 Characteristics & Husbandry:
🐠 Fish size: M (4–5 cm)
🌎 Origin: Central & South America (Colombia, Panama, Ecuador) – Wild-caught
🌡️ Temperature: 24–29 °C
💧 pH value: 7.0–8.0
⚖️ Total hardness: up to 25 °dGH
🐟 Social behaviour: Peaceful, active schooling fish
🌾 Aquarium: From 300 l, with current, sandy substrate & plenty of swimming space

🍽️ Feeding:
The Ariopsis seemanni is an omnivore with a preference for animal food. It eats frozen and live food such as Mysis, Artemia, mussel meat, and shrimp pieces. Sinking granules, tablet food, and vegetable supplements are also readily accepted.

💡 Tip:
The mini shark should be kept in groups of at least 3–5 animals. From a size of about 10–12 cm, a gradual acclimatization to slightly brackish water is recommended. Good water circulation and sufficient space are crucial for its well-being.

👉 Conclusion:
The mini shark (Ariopsis seemanni) is a peaceful, fascinating migratory catfish with shark-like elegance – perfect for experienced aquarists and enthusiasts of unusual species with brackish water experience.