Mayan Tetra

Geographical Origin and Habitat: This freshwater species is native to Central America, primarily distributed in the Papaloapan River basin in southern Mexico, as well as in Belize and northern Guatemala. It inhabits slow-flowing rivers, sheltered forest streams, canals, and flooded plains rich in submerged vegetation and overhanging roots, where the water is typically warm and calm.

Taxonomy and Morphology: It belongs to the Characidae family and the Hyphessobrycon genus, serving as the type species for the genus. It is a small fish, reaching a maximum total length of approximately 4 to 4.5 centimeters. It features a body that is strongly compressed laterally and relatively deep compared to its length, with clear fins and a mouth directed slightly upward.

Social Behavior: A peaceful and schooling fish, it must be kept in groups of at least 6 to 8 individuals to ensure they feel secure and exhibit natural schooling behaviors. Within the group, mature males may engage in harmless display dances to establish social hierarchy without causing injury. It swims primarily in the middle areas of the water column.

Coloration and Sexual Dimorphism: The body coloration is silvery or greyish with metallic yellow or coppery reflections under proper lighting. A distinct dark or blackish spot is visible on the dorsal fin, while the other fins are mostly hyaline or transparent. Sexual dimorphism is visible in adults: mature males are slenderer, display slightly more intense coloration, and possess longer dorsal and anal fins compared to females.

Aquarium Setup: Requires an aquarium of at least 60 to 80 liters (approx. 15-20 gallons) to accommodate a school. The ideal tank setup includes dense planting along the sides and background, leaving plenty of open swimming space in the center. The addition of driftwood, roots, and dried leaf litter helps replicate its natural habitat while providing shelter. A dark substrate is recommended to enhance its colors.

Diet and Feeding: An opportunistic omnivore. In captivity, it readily accepts a wide variety of foods. The diet should be based on high-quality flakes or micro-granules, supplemented regularly with small frozen or live foods such as daphnia, brine shrimp, bloodworms, and cyclops, which are essential for promoting vibrant coloration and breeding condition.

Water Quality: Prefers clean, well-filtered water with warm temperatures ranging between 23 and 26°C. The ideal pH range is 6.0 to 7.5, with water hardness ranging from soft to moderately hard (5-15 dGH). Regular partial water changes (10-20% weekly) are important to maintain low nitrate levels, as the species is sensitive to waste buildup.

Compatibility and Cohabitation: An excellent candidate for peaceful freshwater community aquariums. It coexists peacefully with other small tetras, rasboras, dwarf cichlids, corydoras, and small catfish. Avoid keeping them with large, boisterous, or predatory fish species (such as large cichlids) that could view them as prey due to their small size.

Aquarium Breeding: Breeding is typical for egg-scatterers. It requires a separate breeding tank with soft, slightly acidic water, dim lighting, and fine-leaved plants or spawning mops. Parents scatter their eggs among the foliage and must be removed immediately after spawning to prevent egg consumption. Raise the fry on infusoria and newborn brine shrimp.

Risks and Diseases: A resilient species that does not exhibit specific vulnerabilities, but can contract common freshwater illnesses like ich (white spot disease) if subjected to temperature fluctuations or poor water quality. A proper quarantine period for new specimens and regular tank maintenance will prevent most issues.