Corydoras CW66, also known as the "CW66" Corydoras, is a lesser-known species of Corydoras catfish, often characterized by its unique markings. Here's a brief overview:

Appearance

• Coloration: Corydoras CW66 usually has a striking appearance with a base color that ranges from pale yellow to light brown, adorned with darker spots or stripes. The pattern can vary, but it typically features distinct markings that make it stand out.
• Size: They generally grow to about 2.5 to 3 inches (6 to 7.5 cm) in length.

Behavior and Temperament

• Temperament: Corydoras CW66 are peaceful and social fish, similar to other Corydoras species. They are known for their calm nature and can be kept with other non-aggressive tank mates.
• Social Behavior: Like other Corydoras, they do well in groups and should be kept in schools of at least 4-6 individuals. This helps reduce stress and allows them to exhibit their natural behaviors.

Tank Requirements

• Tank Size: A minimum of a 20-gallon (75 liters) tank is suitable for a small group. Larger tanks are better if you plan to keep a larger number of Corydoras.
• Substrate: A soft substrate, such as fine sand or smooth gravel, is ideal to prevent damage to their barbels.
• Water Conditions:
  • Temperature: 72-78°F (22-26°C).
  • pH: Slightly acidic to neutral, around 6.0-7.5.
  • Water Hardness: Soft to moderately hard water (2-12 dGH) is preferred.

Diet

• Omnivorous: Corydoras CW66 are omnivores and will accept a variety of foods, including sinking pellets, live or frozen foods like bloodworms, brine shrimp, and daphnia, as well as occasional vegetable matter.

Corydoras CW66 adds a unique visual element to an aquarium and is a relatively easy species to care for, making it a good choice for community tanks with other peaceful fish.