Catfish Melini Corydoras

Melini Corydoras are beautiful freshwater catfish known for their distinctive black markings, peaceful nature and entertaining personalities. Their creamy beige bodies feature a striking dark band across the eyes and a diagonal black stripe running along the back towards the tail, giving them their distinctive appearance.

Also commonly known as the False Bandit Cory, these charming bottom-dwelling fish originate from South America and spend much of their time exploring the aquarium floor, searching for food and interacting with their companions.

Their gentle temperament and social behaviour make them a wonderful addition to peaceful tropical community aquariums, particularly those with soft water, natural decorations and plenty of hiding places.

Scientific Name: Hoplisoma melini (formerly Corydoras melini)

Care Level: Moderate

Temperament: Peaceful, social and active

Maximum Size: Approximately 5–6 cm

Lifespan: Approximately 5–8 years with proper care

Minimum Tank Size:

A minimum aquarium size of approximately 75–80 litres is recommended for a group of Melini Corydoras, with larger aquariums preferred for additional swimming space and improved water stability.

As bottom-dwelling fish, Melini Corydoras benefit from aquariums with plenty of floor space rather than tall, narrow tanks. A tank with a base measuring approximately 80 × 30 cm or larger is recommended.

A soft, fine sandy substrate is particularly important, allowing them to naturally sift through the sand while searching for food without damaging their sensitive barbels.

Driftwood, live plants, smooth rocks, leaf litter and shaded hiding spaces help recreate their natural environment and encourage comfortable, natural behaviour.

How Many Should Be Kept Together?

Melini Corydoras should be kept in groups of at least 6, although groups of 8–10 or more are even better when aquarium space allows.

These fish are naturally social and feel much more confident when surrounded by others of their own species.

Keeping them individually or in very small numbers can cause stress, shyness and reduced natural behaviour.

Although they may interact with other Corydoras species, keeping a proper group of Melini Corydoras is recommended.

Ideal Water Temperature:

22–26°C, with approximately 23–25°C being an excellent target for everyday care.

Melini Corydoras prefer moderate tropical temperatures and should not be kept in consistently hot aquariums.

Stable water conditions are particularly important, as sudden temperature changes can cause stress.

Water Conditions:

Melini Corydoras naturally inhabit soft, acidic freshwater environments and thrive in clean, well-oxygenated aquariums with stable water parameters.

• Ideal pH: Approximately 5.5–7.0

• Water Hardness: Soft, ideally 1–10 dGH

• Water Flow: Gentle to moderate, with good oxygenation

• Ammonia and Nitrite: 0 ppm

• Aquarium: Fully cycled, mature and well maintained

They are particularly well suited to soft-water community aquariums with natural driftwood, plants and shaded areas.

Regular partial water changes and careful substrate cleaning are important for maintaining their health.

Diet:

Melini Corydoras are omnivores and require a varied diet of quality sinking foods and protein-rich supplements.

A suitable diet includes sinking catfish pellets, bottom-feeder tablets and occasional frozen or live foods such as bloodworms, brine shrimp and daphnia.

Although they will happily search for leftover food along the aquarium floor, they should never be expected to survive on scraps alone.

Ensure food reaches the bottom of the aquarium and that faster-feeding tank mates do not consume everything before the Corydoras have an opportunity to eat.

Compatibility:

Melini Corydoras are peaceful community fish and are best housed with other small, non-aggressive species that enjoy similar water conditions.

Suitable tank mates may include:

• Neon Tetras

• Green Neon Tetras

• Rummy Nose Tetras

• Small, peaceful Rasboras suited to soft water

• Other peaceful Corydoras, provided each species has a suitable group

• Peaceful freshwater snails

Avoid housing them with large, aggressive or predatory fish that may bully, injure or eat them.

Care should also be taken when selecting tank mates that require much warmer water or significantly harder, more alkaline conditions.

Things to Be Cautious Of:

• Sensitive Barbels: Melini Corydoras use delicate whisker-like barbels to locate food. Sharp substrates and accumulated waste can contribute to injuries and infections. Fine, clean sand is strongly recommended.

• Group Size: They are social fish and should be kept in groups of at least 6 to encourage natural behaviour and reduce stress.

• Water Hardness: Melini Corydoras naturally prefer soft, slightly acidic water and may not thrive long-term in hard, alkaline aquariums.

• Poor Water Quality: They are sensitive to deteriorating water conditions and should only be introduced into fully cycled, well-maintained aquariums.

• High Temperatures: Consistently high tropical temperatures can cause stress and should be avoided.

• Feeding: They require their own appropriate sinking foods and should not be relied on solely as aquarium cleaners.

• Surface Breathing: Corydoras occasionally swim quickly to the surface to gulp air. This is normal behaviour, although frequent surface gulping may indicate poor water quality or inadequate oxygenation.

• Safe Handling: Their sharp fin spines can become caught in aquarium nets, so care should be taken when transferring them.

Helpful Notes:

Melini Corydoras are a fantastic choice for aquarists wanting a peaceful, attractive and entertaining bottom-dwelling fish.

Their striking black markings and soft beige colouring create a beautiful contrast against sandy substrates, green aquatic plants and natural driftwood.

They are particularly enjoyable to watch in groups, where they can often be seen resting together beneath plants before becoming active and exploring the aquarium floor.

Unlike some more adaptable Corydoras varieties, Melini Corydoras particularly appreciate soft, acidic water and an established aquarium with stable conditions.

Providing a suitable group, fine sandy substrate, peaceful tank mates and clean, well-oxygenated water will help these charming little catfish thrive.