Sucking Catfish

Sucking Catfish - The Classic Algae-Eating Cleanup Crew Member

The Sucking Catfish is the classic mottled brown/grey algae-eating sucking catfish familiar to generations of aquarium keepers, prized for its tireless grazing on algae-covered glass, rocks and driftwood. Its sucker-like mouth and armoured body make it an easily recognised workhorse of the community tank.

While sold small, this is a genuinely large-growing species that can reach 30 cm or more once fully mature, so a long-term upgrade to a spacious aquarium is a real commitment you should plan for from day one, not an afterthought. It is otherwise a hardy, low-fuss fish that tolerates a wide range of established water conditions.

At N8 Aquatics, our fish are carefully raised and conditioned to ensure healthy stock suited to home aquariums.

Species Snapshot

• Size Sold: Juvenile, 4-6 cm
• Adult Size: Can reach 30 cm+ at full maturity
• Tank Size: 100 L to start, upgrading to 250 L+ as it matures
• Temperament: Peaceful, but territorial toward its own species
• Temperature: 22-28°C
• pH: 6.5-7.5
• Difficulty: Easy

Ideal Habitat and Care

Begin in a 100 L tank and plan to upgrade to 250 L or larger long-term, with driftwood included as a natural grazing surface and hiding spot.

• Temperature: 22-28°C
• pH: 6.5-7.5
• Water Flow: Moderate
• Maintenance: Regular water changes, particularly as the fish grows and bioload increases

Diet

An algae-based diet with supplementary vegetables keeps this species thriving.

• Algae wafers as a staple
• Blanched vegetables such as zucchini or cucumber
• Driftwood to graze on

Compatibility

Peaceful toward other community fish but territorial with its own species, this fish suits tanks sized for its adult growth.

Suitable tankmates include:

• Most peaceful community fish
• Larger, robust tank residents
• Other bottom dwellers with plenty of space

Avoid aggressive or fin-nipping species.

Why Buy From N8 Aquatics

• Carefully raised aquarium fish
• Healthy, well-conditioned stock
• Strong genetics and vibrant colouration
• Breeder support if you have questions

Pickup Information

N8 Aquatics currently operates as a local pickup-only breeder in Central Queensland.

Orders are collected by appointment after purchase confirmation.

Please ensure you are able to collect your fish before placing an order.

Important

All livestock sold by N8 Aquatics should be introduced to fully cycled aquariums suitable for the species being kept.

Please ensure your aquarium setup and tankmates are appropriate before purchasing.