Meinken's Splashing Tetra

Geographic Origin and Biotope: Endemic to the Rio Negro and Orinoco basins in South America. Inhabits flooded marginal areas of rainforests (Igapó) and small slow-flowing tributaries with dense overhanging riparian vegetation and dark, tannin-rich waters.

Taxonomy and Morphology: Copella meinkeni (Meinken's Splash Tetra). Belongs to the Lebiasinidae family. Features a slender, almost cylindrical body, adapted for swimming and jumping near the surface. Silvery livery with a distinct dark lateral line and pinkish hues on the fins.

Social Behavior: Gregarious and peaceful species. Spends most of its time hovering just below the water surface waiting for insects. Should be kept in groups of at least 6-8 individuals, where males will establish a mild hierarchy displaying colors.

Coloration and Sexual Dimorphism: Adult males are noticeably larger, more colorful, and develop much more elongated and pointed unpaired fins (dorsal and anal) compared to females. Females are plumper and less vibrantly colored.

Aquarium Setup: Aquarium of at least 60-80 cm (24-32 inches) with a mandatory tight-fitting lid (they are excellent jumpers). A "blackwater" setup with plenty of surface vegetation and floating plants (Limnobium, Salvinia). Very slow water movement.

Diet and Feeding: Surface micro-predator. In nature, it feeds on terrestrial insects fallen into the water. In the aquarium, it accepts dry floating flakes or granules, but thrives on Drosophila (fruit flies), mosquitoes, bloodworms, and brine shrimp.

Water Quality: Requires soft and acidic water (pH 5.5-7.0, GH 1-10) with a temperature between 22 and 28°C (71-82°F). The addition of catappa leaves and peat is strongly recommended to replicate biotope conditions.

Compatibility and Tankmates: Suitable for very peaceful South American community tanks. Excellent coexistence with small Characins, Corydoras, small Loricariids, and dwarf cichlids (Apistogramma). Avoid large or excessively boisterous fish.

Aquarium Reproduction: Unlike the famous C. arnoldi, it does not lay eggs out of the water, but on leaves of aquatic plants located very close to the surface or just submerged. The male guards and defends the eggs until hatching.

Risks and Diseases: The main risk is jumping out of the tank if not adequately covered. Sensitive to sudden pH fluctuations and the accumulation of nitrogenous pollutants on the surface; essential to keep the surface biofilm slightly broken.