Blue Diamond Tetra Care Guide
Alestopetersius smykalai · Freshwater Fish
What Blue Diamond Tetra look like
The Blue Diamond Tetra (Alestopetersius smykalai) exhibits a strikingly brilliant iridescent blue body, characterized by a deep, laterally compressed fusiform shape that reaches a maximum adult size of approximately 3 inches (7.5 cm). Sexual dimorphism is evident, with males displaying elongated dorsal and caudal fin extensions, enhancing their visual appeal during courtship displays. The overall body structure is complemented by a prominent lateral line, which aids in hydrodynamic sensing, and a well-defined adipose fin that contributes to its streamlined profile. The dentition is small and conical, suitable for its omnivorous diet, while the vibrant coloration serves as both a defensive adaptation against predation and a means of social signaling within shoals.
Behavior & temperament
Inhabiting the mid to upper water column, the Blue Diamond Tetra is a social species that thrives in groups, often forming loose schools in its natural habitat. It exhibits a peaceful temperament, making it suitable for community tanks, although males may display mild aggression during breeding rituals. Breeding behavior involves egg scattering, where females release eggs among vegetation, providing some protection for the developing fry. The species prefers to dwell in well-planted areas of slow-moving waters, where it can find both shelter and foraging opportunities, thus promoting a harmonious social hierarchy within the shoal.
Diet & feeding
In the wild, the Blue Diamond Tetra is an omnivore, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, it requires a balanced diet consisting of high-quality flake food, supplemented with live or frozen foods such as daphnia and brine shrimp to maintain optimal health and coloration.
Behind the name
Alestopetersius (Greek origin: 'alesto' meaning 'to leap' and 'petersius' named in honor of the ichthyologist Dr. Peter), smykalai (named after the collector of the species).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Blue Diamond Tetra?
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