The Moenkhausia cosmops, commonly known as the Cosmet Tetra, is a visually striking and lively freshwater fish that originates from South America. This tetra species is well-regarded for its attractive coloration and peaceful demeanor, making it a popular choice among aquarium enthusiasts. Let's explore the key features and care requirements of the Moenkhausia cosmops:

Appearance:

• The Cosmet Tetra displays a vibrant and contrasting color pattern. Its body is typically silver, adorned with a bold horizontal black stripe running along its midsection.
• The dorsal fin features an eye-catching red-orange hue, adding to its overall allure.

Water Conditions:

• Temperature: Maintain a tropical environment within the range of 72°F to 78°F (22°C to 26°C).
• pH Levels: Aim for slightly acidic to neutral water conditions, ideally between 6.0 to 7.5.
• Water Hardness: Keep water hardness in the soft to medium range, around 5 to 15 dGH.

Tank Size and Setup:

• Provide a well-planted aquarium of at least 20 gallons to accommodate a school of Cosmet Tetras.
• Utilize a substrate of fine gravel or sand, and include driftwood, rocks, and live plants to create a natural and engaging environment.

Tank Mates:

• The Cosmet Tetra is generally peaceful and thrives in a community setting.
• Ideal tank mates include other small, non-aggressive fish such as other tetras, rasboras, and small catfish. Avoid keeping them with larger or more aggressive species.

Feeding Habits:

• Cosmet Tetras are omnivores and accept a varied diet.
• Provide high-quality flakes, pellets, and supplement their diet with live or frozen foods such as brine shrimp, bloodworms, and daphnia to enhance their coloration.

Care and Maintenance:

• Regular water changes are essential to maintain water quality, and consistent monitoring of parameters with reliable test kits is recommended.
• Ensure a well-filtered aquarium to keep the water clean and well-oxygenated.
• Cosmet Tetras are shoaling fish, so keep them in a group of at least six individuals to promote natural schooling behavior.

Breeding Behavior:

• Breeding Cosmet Tetras in captivity is achievable with proper conditions.
• Provide fine-leaved plants or spawning mops for egg deposition. Separating the eggs or fry to a dedicated breeding tank can enhance survival rates.