Corydoras Reticulatus: A Comprehensive Guide to Care For the Reticulated Corydoras

Corydoras reticulatus, reticulated corydoras, mosaic corydoras, network catfish, network corydoras,

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Corydoras Reticulatus: A Comprehensive Guide to Care For the Reticulated Corydoras

Corydoras reticulatus, known by various names such as the reticulated corydoras, mosaic corydoras, network catfish, or network corydoras, is a tropical freshwater fish belonging to the Corydoradinae sub-family within the Callichthyidae family. This species originates from South America and is primarily found in the Lower Amazon River basin in Brazil.

These fish typically grow to a maximum length of 2.4 inches (6.1 centimeters) and thrive in tropical climates. They inhabit waters with a pH range of 6.0–8.0, a water hardness level ranging from 2–25 dGH, and a temperature range of 72–79 °F (22–26 °C). Their diet consists of a variety of foods, including worms, benthic crustaceans, insects, and plant matter.

Common NamesReticulated Cory, Mosaic Cory, Network Catfish, Network Corydoras
Scientific NameCorydoras reticulatus
Size of the FishUp to 2.4 inches (6.1 centimeters)
Difficulty ScoreEasy to Moderate
Minimum Tank Size20 gallons (75 liters)
Best Compatible Tank MatesTetras, Dwarf Gouramis, Rasboras, Small Guppies, Peaceful loaches
Water ParameterspH: 6.0–8.0, dGH: 2–25, Temperature: 72–79 °F (22–26 °C)
Natural HabitatInland waters of the Lower Amazon River basin, Brazil
DietWorms, benthic crustaceans, insects, plant matter
ReproductionEgg scatterer; females attach sticky eggs to vegetation
Commercial ImportanceValued in the aquarium trade industry
Source: Seriously Fishy

Origin of Corydoras Reticulatus

Corydoras reticulatus, This species originates from South America and is primarily found in the Lower Amazon River basin in Brazil. This unique environment, characterized by dark, acidic waters and lush vegetation, has greatly influenced the adaptation of these catfish.


Corydoras reticulatus, reticulated corydoras, mosaic corydoras, network catfish, network corydoras,

Corydoras reticulatus boasts a distinctive appearance that sets them apart from other Corydoras species. These fish typically grow to a size of around 2 inches (5 centimeters) and feature the following eye-catching characteristics:

1. Coloration: The base color of their body ranges from olive green to dark brown, adorned with a striking network-like pattern of thin, white lines. This pattern extends from their snout to the caudal fin, giving them their common name, “Reticulated Cory.”

2. Dorsal Fin: The dorsal fin of Corydoras reticulatus has a robust and spiny appearance, a notable feature that distinguishes them from other Corydoras species.

3. Adipose Fin: These catfish possess a distinctive adipose fin, which is rounded and marked with white spots.

4. Barbels: Like all Corydoras species, they have sensitive barbels around their mouth, which they use to forage for food.

5. Size: Corydoras reticulatus are relatively small, making them suitable for smaller aquariums.

Corydoras Reticulatus Care Guide

Tank Setup (Corydoras Reticulatus Tank Setup)

Setting up the ideal tank for Corydoras reticulatus is a important step in ensuring their well-being and happiness. Proper tank setup provides a comfortable and natural environment that mimics their native habitat in the Lower Amazon River basin of Brazil. Let’s explore the key aspects of tank setup, including tank size, filtration, substrate, plants, and heaters.

Tank Size (Corydoras Reticulatus Tank Size):
To accommodate a small group of Corydoras reticulatus, it is recommended to use a tank with a minimum capacity of 20 gallons (75 liters). These fish thrive in groups, so keeping at least six of them together promotes their social well-being and reduces stress. A larger tank allows for a more stable and easily maintainable environment.

Filtration (Best Filter Options):
Choosing the right filter is essential for maintaining water quality in your Corydoras reticulatus tank. Consider a gentle, low-flow filter to prevent strong water currents that can stress these fish. Brands like Fluval, Eheim, and AquaClear offer reliable options. A sponge filter is an excellent choice as it provides biological filtration and doesn’t create strong water movement.

Substrate (Best Substrate Options):
When selecting substrate for your tank, opt for fine sand or smooth gravel. Corydoras reticulatus are known for their sensitive barbels, which they use to sift through the substrate in search of food. Rough or sharp substrate can damage their delicate barbels. CaribSea Super Naturals sand and Seachem Fluorite gravel are popular choices among aquarists.

Plants (Best Plant Options):
Incorporating live plants into your aquarium not only enhances its aesthetics but also contributes to the well-being of Corydoras reticulatus. Plants provide hiding spots, help maintain water quality, and create a natural environment. Consider easy-to-care-for species such as Java Fern, Anubias, Amazon Sword, and Cryptocoryne. Brands like Tropica and Seachem offer high-quality aquatic plants.

Heaters (Best Heater Options):
Maintaining a stable temperature is crucial for the health of Corydoras reticulatus. Select a reliable aquarium heater to ensure the water temperature remains within the recommended range of 72–79 °F (22–26 °C). Eheim Jager, Fluval E, and Aqueon Pro heaters are trusted options known for their accuracy and durability. Make use of a thermometer to monitor and adjust the temperature as needed.

Decoration: Mimic their natural environment with the addition of driftwood, live plants, and leaf litter. These elements create hiding spots and contribute to water chemistry similar to their native habitat.

Creating the perfect habitat for Corydoras reticulatus involves selecting an adequately sized tank, choosing a suitable filter with gentle water flow, using fine sand or smooth gravel as substrate, incorporating live plants for enrichment, and maintaining a stable water temperature with a reliable heater. Brands like Fluval, Eheim, CaribSea, Seachem, Tropica, and Aqueon offer products that cater to the specific needs of these charming catfish. By paying attention to these details during the tank setup process, you’ll provide a comfortable and thriving environment for your Corydoras reticulatus, ensuring their health and happiness in your aquarium.

Water Parameters (Corydoras Reticulatus Water Parameters):

  • Temperature: Maintain a stable temperature between 72°F to 78°F (22°C to 26°C).
  • pH: Aim for slightly acidic to neutral water with a pH range of 6.0 to 7.0.
  • Hardness: Keep the water soft to moderately hard, with a dH range of 2 to 15.

Aquarium Maintenance (Corydoras Reticulatus Aquarium Maintenance)

Proper aquarium maintenance is vital for the health of Corydoras reticulatus:

Water Changes: Regular partial water changes of 25% every two weeks will help keep ammonia and nitrite levels in check.

Siphoning: Gently vacuum the substrate during water changes to remove debris without disturbing the fish.

Testing: Monitor water parameters using reliable test kits to ensure water quality remains within the recommended ranges.

Feeding (Corydoras Reticulatus Feeding)

Corydoras reticulatus are omnivorous and will accept a variety of foods:

Diet: Offer a balanced diet that includes high-quality sinking pellets, flakes, frozen or live foods such as brine shrimp, bloodworms, and daphnia.

Feeding Frequency: Feed them small portions twice a day, ensuring they consume all the food within a few minutes.

Variety: Incorporate variety into their diet to provide essential nutrients.

Breeding (Corydoras Reticulatus Breeding)

Corydoras reticulatus lays its eggs in dense vegetation, and interestingly, the adults do not provide any parental care. The female holds a cluster of 2–4 eggs between her pelvic fins, allowing the male to fertilize them for approximately 30 seconds. Subsequently, the female carefully attaches the adhesive eggs to a suitable substrate. This process is repeated until approximately 100 eggs have been successfully fertilized and secured.

Hatching: Transfer the eggs to a separate container to protect them from being eaten by the adults. After about a week, the fry will hatch and can be fed with infusoria and finely crushed flakes.

Diseases (Corydoras Reticulatus Diseases)

Maintaining a clean and stress-free environment will help prevent diseases. Common ailments include ich, fin rot, and fungal infections. Quarantine new fish before introducing them to your aquarium to prevent the spread of diseases.

Behavior (Corydoras Reticulatus Behavior)

Corydoras reticulatus are peaceful and social fish. They are known for their endearing behavior, including:

Schooling: They enjoy being in the company of their own kind and should be kept in groups of six or more.

Bottom Dwellers: These catfish spend most of their time near the substrate, scavenging for food.

Compatibility (Corydoras Reticulatus Compatibility):

  • They are compatible with other peaceful community fish of similar size.
  • Avoid keeping them with aggressive or large fish that may intimidate or prey on them.

Lifespan (Corydoras Reticulatus Lifespan)

With proper care, Corydoras reticulatus can live for about 5 to 8 years, making them a long-term addition to your aquarium.

Tank Mates (Corydoras Reticulatus Tank Mates)

Consider these compatible tank mates for Corydoras reticulatus:

  • Tetras (e.g., Neon Tetras)
  • Dwarf Gouramis
  • Rasboras
  • Small Guppies
  • Peaceful loaches (e.g., Kuhli Loaches)

Other Cory catfish that make good tank mates


Corydoras reticulatus, with their captivating appearance and peaceful nature, make an excellent choice for aquarists of all levels. By replicating their natural habitat, providing appropriate care, and following the guidelines outlined in this article, you can ensure the health and happiness of these delightful fish in your aquarium. Remember to maintain water quality, offer a varied diet, and keep them in the company of their own kind to enjoy their charming behavior for years to come.

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Lee Johnson

Lee Johnson

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I love sharing my knowledge about all things aquarium related. I have been keeping aquariums for over 20 years and cannot imagine a life without an aquarium. 

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