Corydoras adolfoi — Adolfoi Corydoras
Family: Callichthyidae
Origin: Upper Rio Negro basin, Brazil
Size: Up to 5.5 cm (2.2 inches)
Lifespan: 5–8 years
 
Natural Habitat
Environment: Slow-moving blackwater tributaries with leaf litter and sandy substrates
Water Conditions: Soft, acidic water rich in tannins and humic acids
Temperature Range: 24–28°C (75–82°F)
 
Physical Description
Body Shape: Gracefully compact with a slightly arched back
Coloration:
Creamy white to light peach body
Prominent black stripe running over the eye and down the back
Bright orange blotch on the nape behind the dorsal fin
Fins: Mostly clear or slightly tinted
Note: Often confused with Corydoras duplicareus, but C. adolfoi typically has a narrower black dorsal stripe and slightly more subdued body coloration.
 
Aquarium Care
Tank Size: Minimum 60 litres (15 gallons) for a group
Water Parameters:
pH: 5.5–7.0
Hardness: Very soft to soft
Temperature: 24–28°C (75–82°F)
Water Flow: Gentle
Substrate: Fine sand to protect delicate barbels
Décor: Leaf litter, driftwood, subdued lighting, and dense planting
Filtration: Clean, stable, and well-oxygenated water
 
Diet
Type: Omnivorous bottom-feeder
Preferred Foods:
High-quality sinking pellets, bloodworms, baby brine shrimp, daphnia
Occasional algae wafers or blanched greens
Feeding Frequency: 1–2 times daily
 
Behavior & Tank Mates
Temperament:
Peaceful and shy; best kept in groups of 6 or more
Active forager in the lower levels
Compatible Tank Mates:
Tetras, rasboras, pencilfish, peaceful dwarf cichlids
Avoid large or aggressive species
Behavior Notes:
Appreciates shaded areas and calm tankmates
Will surface-gulp air on occasion
 
Breeding
Spawning Method: Egg scatterer
Breeding Conditions:
Triggered by cool, soft water and protein-rich diet
Eggs laid on glass, plants, or driftwood
Fry Care:
Eggs hatch in 3–4 days
Fry should be fed infusoria or powdered food initially
 
Conservation Status
IUCN Status: Not Evaluated
Notes: A beautifully marked and peaceful species prized for its elegance and contrasting color pattern; ideal for softwater community and biotope tanks