The Turquoise Rainbowfish (Melanotaenia lacustris) is a visually stunning species of freshwater fish, highly prized for its striking turquoise-blue coloration and active, peaceful nature. Below is a complete overview:
Color: The Turquoise Rainbowfish is known for its vibrant, metallic turquoise body, often with hints of green, blue, and silver. Males tend to have brighter, more intense coloration, especially during breeding periods, while females have more subtle hues.
Size: They typically grow to 4–5 inches (10–12 cm) in length.
Shape: Their bodies are slender and streamlined, ideal for fast swimming. They have long, flowing fins, with the males displaying more elongated dorsal and anal fins during breeding displays.
Habitat:
Native Range: Native to the clear, freshwater lakes and slow-moving streams of Lake Kutubu in Papua New Guinea.
Water Conditions: They thrive in warm water with temperatures ranging from 75–82°F (24–28°C), slightly acidic to neutral pH (6.5–7.5), and soft to moderately hard water. They prefer well-planted environments with ample swimming space.
Behavior:
Social & Peaceful: Turquoise Rainbowfish are peaceful, active, and schooling fish that prefer to live in groups of 6 or more. In the wild, they form large schools, and they are happiest in groups in the aquarium as well.
Activity: They are active swimmers, often seen gliding gracefully throughout the tank, especially when kept in schools. They are generally non-aggressive but may become territorial during the breeding season.
Diet:
Omnivorous: Turquoise Rainbowfish are not picky eaters. They will accept a varied diet, including high-quality flakes, pellets, and a variety of live or frozen foods like brine shrimp, daphnia, bloodworms, and algae-based foods.
Aquarium Care:
Tank Requirements: They should be kept in a tank that mimics their natural environment— a well-planted tank with plenty of swimming space. A peaceful community setup works well, with other non-aggressive fish that enjoy similar water conditions.
Water Conditions: They prefer slightly acidic to neutral water (pH 6.5–7.5) and a temperature range of 75–82°F (24–28°C). They also enjoy moderate to strong water flow, which helps simulate their natural habitat.
Breeding:
Breeding Behavior: Males become more colorful during the breeding season, showcasing vibrant hues to attract females. Eggs are typically laid among plants, and the parents do not guard their eggs or fry. The eggs hatch in 7–10 days, and the young should be fed with infusoria or fine foods until they grow larger.
Tankmates:
Community Fish: They are peaceful and get along well with other non-aggressive fish such as tetras, guppies, danios, and other rainbowfish. Avoid keeping them with overly aggressive species or fin-nippers.
