Pygmy Cory

Corydoras pygmaeus (commonly known as the Pygmy Cory) is a tiny, peaceful, and highly active South American schooling catfish.

Overview

• Size: Growing to only 2-2.5 cm (1 inch) in length, they are ideal for nano tanks.
• Unique Behavior: Unlike other corys, they exhibit mid-water "hummingbird" hovering behavior.
• Requirements: They thrive in soft water, a well-planted environment, and need to be kept in a school of 6 or more.

Key Species Facts

• Common Name: Pygmy Cory, Dwarf Catfish
• Size: Maximum of 2 to 2.5 cm (1 inch); females are slightly larger and rounder than males.
• Lifespan: 3 to 5 years with proper care.
• Origin: Native to the Madeira River basin and surrounding tributaries in Brazil.
• Temperament: Highly peaceful, social, and schooling.

Care Requirements

• Tank Size: A minimum of 38 liters (10 gallons) is recommended to accommodate a school comfortably.
• Water Parameters:
  • Temperature: 24 to 28°C (75 to 82°F)
  • pH: 6.0 to 8.0
  • Water Hardness: Soft to moderately hard water (5 to 20° dH)
• Substrate & Decor:
  • Sand or fine, smooth gravel is essential to prevent damage to their sensitive barbels (whiskers).
  • Include plenty of live plants and hiding spots to help them feel secure.

Behavior & Tank Mates

• Activity: Unlike most bottom-dwelling catfish, Pygmy Corys spend a significant amount of time hovering and schooling in the middle of the water column.
• Tank Mates:
  • Excellent for nano community tanks.
  • Best kept with other tiny, peaceful fish (e.g., chili rasboras, neon tetras) and small invertebrates like cherry shrimp.

Diet

• Feeding Habits: Due to their very small mouths, they require tiny, sinking foods. They do not forage from the water's surface.
• Dietary Options:
  • Sinking micro-pellets
  • Crushed flakes
  • Live or frozen baby brine shrimp
  • Daphnia
  • Tiny worms

This delightful species is perfect for aquarists looking for a peaceful and unique addition to their nano tanks. With the right care and environment, Pygmy Corys will thrive and bring life to your aquarium!