Sterba’s Cory

Sterba’s Cory (Hoplisoma sterbai)

A peaceful and attractively marked armored catfish from the Amazon basin, particularly the Guaporé and surrounding river systems in Brazil. Known worldwide as “Sterba’s Cory,” this species has long been a favorite among hobbyists for its compact size, active shoaling behavior, and subtle yet appealing patterning. It remains one of the most commonly bred and readily available members of the Corydoras group, making it an excellent choice for both beginners and experienced aquarists.

Key Features

• Maximum Size: 6.8 cm / ~2.7 inches SL.
• Appearance: Compact, armored body with the classic Corydoras-group shape and distinctive patterning that often includes warm orange or golden accents on the fins and body. Females grow larger and more full-bodied than males; mature males develop more pointed fin tips.
• Fin Details: Typical for the genus, with rounded to slightly pointed fins depending on sex and maturity.

Aquarium Care

• Tank Size: Minimum 20–30 gallons for a small group (larger is better for active shoaling).
• Water Parameters: Tropical freshwater; 75–82°F (24–28°C), pH 6.0–7.6, soft to moderately hard. Excellent water quality and a soft sand or fine-gravel substrate are essential to protect sensitive barbels. Provide driftwood, plants, and some shaded areas.
• Diet: Omnivorous bottom feeder — readily accepts sinking tablets, granules, flakes, and a variety of live or frozen foods (bloodworm, white worm, daphnia, Tubifex).
• Behavior: Extremely peaceful and sociable shoaling fish that thrives in groups. Excellent community tank inhabitant. Provide driftwood, plants, and open foraging areas with some shaded spots. Breeding is very well-documented in captivity, with numerous pair-spawning reports available; females hold eggs between pelvic fins before depositing them on glass or décor.

IUCN Status Not Evaluated