Green Cory Catfish (Bronze Corydoras aeneus) for Sale – Shrimp Safe Bottom Feeder

Green Cory Catfish Care Guide (Corydoras aeneus)

Green Cory Catfish, also known as Bronze Cory Catfish (Corydoras aeneus), are one of the easiest and most rewarding freshwater fish to care for. These peaceful bottom dwellers are perfect for beginners and thrive in community and shrimp tanks when provided with the right environment.

Tank Size and Setup

Green Cory Catfish do best in aquariums that provide plenty of floor space and a soft substrate.

• Minimum tank size: 20 gallons
• Substrate: Fine sand is highly recommended
• Aquascape: Live plants, driftwood, and hiding spots
• Lighting: Moderate
• Flow: Gentle to moderate

A soft sand substrate is especially important because cory catfish use their sensitive barbels to search for food. Sharp gravel can damage these and lead to health issues.

Water Parameters

Green Cory Catfish are very adaptable but prefer stable conditions:

• Temperature: 72–78°F
• pH: 6.0–7.5
• Water hardness: Soft to moderately hard
• Water quality: Clean and well-oxygenated

Regular water changes (20–30% weekly) help keep them healthy and active.

Diet and Feeding

Green Cory Catfish are omnivores and should not rely only on leftover food.

Feed a balanced diet of:

• Sinking pellets or wafers
• Algae wafers
• Frozen or live foods (bloodworms, brine shrimp)

They are active foragers but still require dedicated feeding to thrive.

Behavior and Temperament

Green Cory Catfish are extremely peaceful and social fish.

• Non-aggressive toward other fish
• Constantly active along the bottom
• Best kept with other peaceful community species

They are known for their playful and active behavior, especially when kept in groups.

Group Size and Social Needs

Green Cory Catfish are schooling fish and should always be kept in groups.

• Minimum group size: 6
• Larger groups = more natural behavior and less stress

Keeping them alone or in small numbers can lead to shy or inactive behavior.

Lifespan and Growth

• Adult size: 2–2.5 inches
• Lifespan: 5+ years with proper care

With stable water conditions and a good diet, Green Cory Catfish are long-lived and hardy aquarium fish.

Common Mistakes to Avoid

Avoid these common issues:

• Keeping them on sharp gravel
• Keeping too few (less than 6)
• Assuming they only eat leftovers
• Poor water quality or infrequent water changes

Fixing these dramatically improves health and activity.

Why Green Cory Catfish Are a Top Choice

Green Cory Catfish (Bronze Corydoras aeneus) are one of the best all-around fish for freshwater aquariums because they are:

• Hardy and beginner-friendly
• Peaceful and community safe
• Compatible with shrimp
• Active and entertaining to watch

Whether you're new to the hobby or building a thriving planted tank, they are a reliable and rewarding addition.

Green Cory Catfish (Corydoras aeneus) – FAQ

Are Green Cory Catfish good for beginners?

Yes, Green Cory Catfish are one of the best beginner fish available. They are hardy, adaptable to a wide range of water conditions, and very peaceful. Their easy care requirements make them a great choice for new aquarium hobbyists.

Are Bronze Cory Catfish the same as Green Cory Catfish?

Yes, Bronze Cory Catfish and Green Cory Catfish are the same species, Corydoras aeneus. The name “bronze” refers to their typical coloration, while “green” describes the metallic sheen they often display under aquarium lighting. There is no difference in care, size, or behavior between the two.

Are Green Cory Catfish shrimp safe?

Yes, Green Cory Catfish are considered shrimp safe. They do not actively hunt shrimp and coexist well with species like cherry shrimp and other Neocaridina. However, very small baby shrimp may occasionally be eaten if encountered.

How many Green Cory Catfish should be kept together?

Green Cory Catfish are schooling fish and should be kept in groups of at least 6. Keeping them in larger groups helps reduce stress and encourages natural, active behavior.

How big do Green Cory Catfish get?

Green Cory Catfish typically grow to about 2 to 2.5 inches in length when fully mature, making them ideal for community and planted aquariums.

What do Green Cory Catfish eat?

Green Cory Catfish are omnivores and thrive on a varied diet. They do best with sinking pellets, algae wafers, and occasional frozen or live foods such as bloodworms or brine shrimp.

Do Green Cory Catfish eat algae?

Green Cory Catfish may occasionally graze on algae, but they are not true algae eaters. They primarily feed on leftover food and should be given a balanced diet to stay healthy.

Do Green Cory Catfish clean the tank?

Green Cory Catfish help clean up leftover food from the bottom of the tank, but they are not a substitute for proper tank maintenance. They should be fed a balanced diet and kept in clean, well-maintained aquariums.

What substrate is best for Green Cory Catfish?

Fine sand is the best substrate for Green Cory Catfish. Their sensitive barbels can be damaged by sharp gravel, so a soft substrate helps keep them healthy and allows natural foraging behavior.

Do Green Cory Catfish need sand substrate?

Yes, Green Cory Catfish do best on a fine sand substrate. Their sensitive barbels are used to search for food, and rough gravel can damage them over time. Sand allows natural foraging behavior and helps keep them healthy and active.

Are Green Cory Catfish aggressive?

No, Green Cory Catfish are very peaceful and non-aggressive. They are excellent community fish and can be safely kept with other peaceful species.

Do Green Cory Catfish need a heater?

Yes, Green Cory Catfish prefer stable tropical temperatures between 72–78°F. In most home aquariums, a heater is recommended to maintain consistent conditions.

How long do Green Cory Catfish live?

With proper care, Green Cory Catfish can live 5 years or longer in a well-maintained aquarium.