Green Labeo

These fish have an elongated, graceful body shape. On the lower lip, there is a sucker equipped with horny plates, which helps scrape algae and organic deposits from various surfaces in the aquarium. The main body color is greenish, reminiscent of swampy hues, while the fins are brightly red. It should be noted that artificially bred color variations also exist.

The natural habitats of these fish span Southeast Asia, including the territories of modern-day Thailand, Laos, and Cambodia. However, determining the precise size of their natural populations today is difficult. Habitat destruction caused by dam construction and the draining of wetlands has led to a significant reduction in the species' numbers, putting it at risk of extinction. Currently, all commercial trade relies on fish bred in artificial conditions. In their natural environment, they prefer small streams and rivers with sandy or rocky bottoms, and during the rainy season, they migrate to flooded areas of the forest floor.

These fish prefer a solitary existence, and group formation is exclusively temporary, mainly associated with the spawning period. With age, the fish become increasingly territorial and aggressive. For the Green Labeo, an ideal solution is a species-specific aquarium designed for a single specimen. If keeping multiple fish is planned, then each fish will require an aquarium of at least 200 liters.

Like many fish whose lives unfold in flowing waters, the Green Labeo is very sensitive to water quality. Therefore, weekly water changes of 20–25% of the volume and siphoning the substrate to remove organic debris should become an integral part of their care. Regarding hydrochemical composition, the Green Labeo demonstrates remarkable adaptability, successfully tolerating a wide range of pH and dH values. To ensure optimal living conditions, it is recommended to install a powerful filter, an aerator, a heater, and a lighting system. In aquarium decor, preference is given to a gravel substrate with several large boulders, as well as various shelters created from driftwood, roots, and tree branches. With good lighting, wooden elements become an excellent basis for algae growth, which serves as an additional source of natural food. As for plants, any species with a well-developed root system will be suitable.

In natural conditions, the diet of these fish consists of plant detritus and algae, to which they incidentally add small crustaceans, insect larvae, and other aquatic life inhabiting plants. In an aquarium environment, it is important to provide a regular and varied diet, including both live or frozen foods (Daphnia, Artemia, bloodworms) and high-quality dry food mixes (granules, flakes). In addition, vegetable supplements are essential. Aquarists often use shelled peas, zucchini or cucumber, spinach, lettuce leaves, and pieces of fruit. These vegetable foods should be submerged to the bottom of the aquarium, using ties or rubber bands for anchoring. They should be refreshed every 2–3 days to prevent decomposition.

Achieving reproduction of these fish in a home aquarium is practically impossible. This process is handled by specialized fish farms, which use hormonal preparations for commercial breeding.

When favorable living conditions are maintained, health problems usually do not arise in these fish. Diseases most often manifest due to deteriorating conditions, an inadequate diet, or contact with infected individuals. It should be noted that some hereditary diseases may be inherent in artificially bred color variations, such as the Albino Red-tailed Black Shark. More detailed information on symptoms and treatment methods can be found in the "Aquarium Fish Diseases" section.

When choosing a Green Labeo, attention should be paid to the fish's activity and the condition of its skin. A healthy specimen should have a bright, rich coloration, clean fins without signs of damage, white film, or erosions. Avoid purchasing fish with sunken bellies, signs of emaciation, or unnatural behavior, such as lethargy, constant hovering near the surface, or attempts to hide in the corner of the aquarium when a person approaches.

Since the species is highly territorial, fish in stores are often under stress, which can temporarily suppress their aggression. It is recommended to purchase young specimens, as they adapt more easily to new conditions and get along better with tankmates in a community aquarium. Before purchasing, ensure that the fish shows interest in food and actively responds to external stimuli.