Mosaic Cory

Mosaic Cory (Gastrodermus sp. C089)

A rare and attractively patterned armored catfish known in the hobby by its C-number (C089) and nicknamed the “Mosaic Cory” for its intricate, mosaic-like patterning. This undescribed member of the Corydoras group remains uncommon in the aquarium trade, making it a true collector’s item for enthusiasts seeking something beyond the more commonly available species. Its small size and peaceful nature make it well-suited to nano tanks, planted aquariums, or species setups.

Key Features

• Maximum Size: 5.0 cm / ~2.0 inches SL.
• Appearance: Compact, armored body with the classic Corydoras-group shape and distinctive “mosaic” patterning of spots or reticulations. Females grow slightly 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 10–20 gallons for a small group (nano or planted tanks are ideal).
• Water Parameters: Tropical freshwater; 72–82°F (22–28°C), pH 6.0–7.2, 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 for security.
• Diet: Omnivorous bottom feeder — readily accepts sinking tablets, granules, flakes, and a variety of live or frozen foods (bloodworm, white worm, daphnia, Tubifex).
• Behavior: Peaceful, sociable shoaling fish that thrives in groups. Excellent community tank inhabitant, especially in smaller or heavily planted setups. Limited breeding reports exist in the hobby.

IUCN Status Not Evaluated (undescribed species with limited hobby presence)