Steel Blue Tetra Care Guide
Hyphessobrycon weitzmanorum · Freshwater Fish
What Steel Blue Tetra look like
The Steel Blue Tetra, scientifically known as Hyphessobrycon weitzmanorum, exhibits a laterally compressed, fusiform body that reaches a maximum adult size of approximately 2 inches (5 cm). Its most striking feature is the vivid steel-blue iridescence that covers its entire body, which is particularly intense and unusual among small tetras. The species displays minimal sexual dimorphism, with males typically being slightly smaller and more vibrantly colored than females. A notable morphological adaptation includes the presence of a well-defined lateral line, which aids in detecting water movements. The dorsal fin is triangular and set towards the rear, while the anal fin is elongated, contributing to its streamlined appearance. The Steel Blue Tetra also possesses a small, terminal mouth with fine, pharyngeal teeth, adapted for its omnivorous diet.
Behavior & temperament
Steel Blue Tetras are typically found in small, tight-knit schools, exhibiting a social hierarchy that favors group dynamics. They dwell primarily in the mid to upper water column, often darting about in search of food. Their breeding behavior is characterized as an egg scatterer, where females release eggs in open water, allowing them to be fertilized externally. In terms of temperament, these tetras are generally peaceful and exhibit minimal aggression, making them suitable for community tanks. Their active nature and schooling behavior contribute to a lively aquarium environment, as they thrive in the presence of conspecifics.
Diet & feeding
In the wild, Steel Blue Tetras are omnivorous, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, they require a balanced diet consisting of high-quality flake food, supplemented with live or frozen foods such as brine shrimp and daphnia to ensure optimal health and coloration.
Behind the name
Hyphessobrycon (from Greek 'hyphessos' meaning 'under' and 'brycon' meaning 'a type of fish'); weitzmanorum (named in honor of ichthyologist Herbert R. Axelrod's colleagues, the Weitzmans).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Steel Blue Tetra?
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