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Midwest Aquarium and Pond Supplier LLC

(71)Julii Corydoras

(71)Julii Corydoras

$9.00 USD
$9.00 USD
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The Julii Corydoras (Corydoras julii), also known as the Leopard Catfish, is a small, peaceful, and social catfish from eastern Brazil. They are a popular choice for community aquariums due to their playful nature and striking black and white speckled pattern. Note that the similar-looking False Julii Corydoras (Corydoras trilineatus) is more common in the aquarium trade and often mislabeled

Telling the difference: True vs. False Julii Cory
  • True Julii (C. julii): Has a polka-dotted pattern on its head and smaller, isolated spots on its body.
  • False Julii (C. trilineatus): Features a reticulated pattern of squiggly dashes or connected spots, which is particularly noticeable on its head. 

Tank requirements
  • Tank Size: A minimum of 20 gallons is recommended for a school of six or more fish. They are active bottom dwellers and need enough horizontal space to forage and school.
  • Decor: A planted tank with plenty of hiding places like driftwood, rocks, and live plants helps them feel secure. Floating plants are a good option to provide shade, as they prefer subdued lighting.
  • Substrate: A soft, fine sand or smooth gravel is essential to protect their delicate, sensory barbels, which they use for finding food.
  • Filtration: A good filter with a gentle flow is best, as they prefer calm water. A filter intake guard is recommended to protect smaller fish. 

Water parameters
  • Temperature: 72–79°F (22–26°C).
  • pH: 6.0–7.5.
  • Hardness (GH): Soft to moderately hard (2–12 dGH).
  • Maintenance: Regular partial water changes (25% weekly) are crucial for maintaining water quality and preventing the buildup of nitrates, which can harm their barbels. 

Diet and feeding
  • Omnivores: Julii Corydoras are bottom feeders that need a varied diet.
  • Staple: High-quality sinking pellets or wafers.
  • Supplement: Live or frozen foods like bloodworms, daphnia, and brine shrimp.
  • Note: They should not be expected to survive on leftover food. Feed them directly, and consider feeding them after turning off the lights since they are nocturnal. 

Behavior and tank mates
  • Temperament: Extremely peaceful and highly social. They must be kept in a school of at least six of their own kind to feel secure and exhibit natural behaviors.
  • Tank Mates: Good companions include other peaceful, similarly sized community fish such as tetras, rasboras, and livebearers.
  • Compatibility: They can be kept with larger shrimp like Amano shrimp, but may eat smaller dwarf shrimp. Avoid aggressive bottom-dwellers or large fish that may see them as prey.
  • Quirks: They will periodically dart to the surface to gulp air, which is normal behavior. 

Breeding
  • Conditioning: Condition the fish with nutritious live and frozen foods.
  • Triggering: Simulate a storm by doing a large water change with slightly cooler water to trigger spawning.
  • Spawning: The female lays sticky eggs on plants or tank glass, often in a "T-position" with the male.
  • Hatching: The parents may eat the eggs, so for successful breeding, move the eggs to a separate container with water from the main tank and an air stone. 







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