Corydoras caudimaculatus

Corydoras caudimaculatus

Overview & Origin

• Scientific Name: Corydoras caudimaculatus (Hoplisoma caudimaculatum) 
• Size: Typically 4–5 cm (1.6–2″), maxing out at ~4.2 cm SL 
• Habitat: Native to the Guaporé River basin in Brazil and Bolivia 
• Lifespan: Around 5 years, occasionally up to 8–10 in ideal conditions 

Water Parameters

• Temperature: 22–27 °C (72–80 °F), optimal 22–26 °C 
• pH: 6.0–8.0; recommended range 6.3–7.3 
• Hardness: 2–25 °dGH (4–17°N) 
• Oxygen: Moderate flow + ability to gulp air; ensure surface access 

Tank Setup

• Size: Minimum 20 gal for a school of 6; need at least 57 L (15 gal) 
• Substrate: Soft sand or fine gravel to protect delicate barbels 
• Decor: Include hiding spots—driftwood, rocks, caves—and live plants 
• Flow & Lighting: Gentle filtration and moderate lighting emulate natural conditions 

Diet & Feeding

• Feeding Behavior: Bottom-dwellers that forage—most active at dusk
• Diet Type: Omnivores with a strong meat preference 
• Staple Foods:
  • Good quality sinking pellets or wafers 
  • Occasionally flake foods that sink
• Supplements: Regular live or frozen treats: bloodworms, brine shrimp, daphnia, tubifex 
• Feeding Tips:
  • Ensure food reaches the bottom before drifting away 
  • Feed 1× daily (evening), allow 30 minutes for foraging 

Temperament & Tankmates

• Behavior: Peaceful, social schooling fish—best in groups of 6 or more 
• Tankmates: Compatible with small, peaceful community fish (e.g., tetras, small rasboras, other Corys) 
• Avoid: Aggressive, large, or fin-nipping species 

Breeding

• Trigger Conditions: Simulate rainy season with cooler water changes (20–26 °C), pH 6–7.5 
• Spawning Behavior:
  • “T-Position” mating; female carries 2–4 eggs in pelvic fins, attaches on plants or glass 
• Egg Care:
  • Remove adults post-spawning to prevent egg predation
  • Eggs hatch in ~3–5 days, feed fry with infusoria → microworms → crushed flakes 

Common Challenges

• Barbel damage: Sharp substrate can injure barbels—risk of infection
• Water quality: Sensitive to ammonia/nitrite/nitrate spikes—requires regular water changes 
• Salt sensitivity: Avoid using salt; Corys are scaleless and vulnerable 

Corydoras caudimaculatus are delightful, hardy catfish when kept in a soft-substrate, clean, well-planted community tank with peaceful companions. Their endearing bottom-foraging behavior and ease of care make them excellent choice for both beginners and experienced aquarists.