Catfish – Upside-Down Catfish – 4-5cm

Upside-Down Catfish – A Unique and Fascinating Aquarium Resident

The Upside-Down Catfish (Synodontis nigriventris) is a remarkable freshwater species that captivates aquarists with its unusual habit of swimming upside down. Native to the rivers and streams of Central Africa, this peaceful and hardy fish is ideal for community tanks. Its striking appearance and fascinating behaviour make it a popular choice for aquarists of all experience levels.

Size and Lifespan

The Upside-Down Catfish grows to a manageable size of 8–10 cm (3–4 inches), making it suitable for medium-sized aquariums. With proper care, including stable water conditions and a varied diet, this species can live for up to 10 years or more.

Ideal Tank Setup

A 100-litre tank or larger is recommended to house a small group of Upside-Down Catfish. To mimic their natural habitat:

• Use soft sand or fine gravel substrate.
• Include plenty of driftwood, caves, and dense plants to provide hiding spots and resting areas.
• Ensure low to moderate lighting to suit their shy and nocturnal nature.

Water Parameters

• pH Range: 6.0–7.5
• Temperature: 22–26°C
• Filtration: Strong filtration is essential to maintain clean, oxygen-rich water.

Compatible Tank Mates

The Upside-Down Catfish is a peaceful species that thrives in community tanks with calm and non-aggressive fish. Ideal tank mates include:

• Tetras
• Rasboras
• Corydoras catfish
• Peaceful cichlids

Avoid housing them with overly active or aggressive species that may stress them. They are social fish and should be kept in groups of at least 3–5 individuals to reduce shyness and encourage natural behaviour.

Feeding and Nutrition

This omnivorous species enjoys a varied diet that includes both plant and protein-based foods. Feed them in the evening to match their nocturnal habits. Suitable foods include:

• Sinking pellets or wafers
• Live or frozen treats like bloodworms, brine shrimp, or daphnia
• Blanched vegetables such as courgette or spinach

Feed once or twice daily, ensuring food sinks to the bottom or attaches to tank decorations, where they can easily access it.

Breeding and Behaviour

Breeding Synodontis nigriventris in captivity is possible but requires careful planning. Males are slimmer, while females are rounder, particularly when carrying eggs. To encourage breeding:

1. Provide a separate tank with plenty of caves and hiding spaces for spawning.
2. Maintain soft, slightly acidic water and a stable temperature around 24°C.

These fish are most active at night, spending their days hiding and foraging under dim lighting. Their upside-down swimming is not only unique but also serves a purpose: it helps them graze on the undersides of leaves and decorations.

Species Overview

• Species: Synodontis nigriventris
• Common Name: Upside-Down Catfish
• Origin: Central Africa (Congo River Basin)
• Diet: Omnivorous
• pH Range: 6.0–7.5
• Temperature: 22–26°C
• Max Size: 8–10 cm (3–4 inches)
• Tank Size: Minimum 100 litres

FAQs About Upside-Down Catfish

1. How big do Upside-Down Catfish grow?
   “They grow to a manageable size of 8–10 cm, making them suitable for medium-sized tanks.”
2. Do they really swim upside down?
   “Yes, they spend most of their time swimming upside down, which helps them forage on the undersides of leaves and decorations.”
3. What do Upside-Down Catfish eat?
   “They enjoy sinking pellets, live or frozen protein-based foods, and occasional vegetables.”
4. Are they suitable for community tanks?
   “Yes, they thrive with peaceful tank mates like tetras and Corydoras.”
5. Do they need to be kept in groups?
   “Yes, keeping them in groups of 3–5 reduces stress and encourages natural behaviour.”

Add an Upside-Down Catfish to Your Aquarium Today!

Bring the charm and intrigue of the Upside-Down Catfish to your tank. Its unique swimming style and peaceful temperament make it a delightful addition to any community aquarium. Order yours today and enjoy this remarkable fish in your setup!