Frankei Tetra Care Guide

Hyphessobrycon frankei · Freshwater Fish

Frankei Tetra
AI-generated illustration of Frankei Tetra
Temperature
72-82°F
pH
5.5-7.5
Adult size
~2″ (5 cm)
Suggested tank
15+ gal
Group size
6+ together
Origin
South America
Family
Characidae

What Frankei Tetra look like

Hyphessobrycon frankei, commonly known as the Frankei Tetra, exhibits a laterally compressed, fusiform body that typically reaches a maximum adult size of approximately 2 inches (5 cm). The species is characterized by a silvery body adorned with distinct dark spots or speckles, which serve as a key distinguishing feature from other members of the Characidae family, particularly the phantom tetras. The body is moderately deep and features a well-defined lateral line, which is crucial for detecting vibrations in the water. The dorsal fin is triangular and positioned towards the rear of the body, while the anal fin is elongated, contributing to its streamlined appearance. Sexual dimorphism is subtle; males tend to be slightly smaller and more vibrantly colored than females, particularly during the breeding season. Defensive adaptations include a schooling behavior that provides safety in numbers, as well as the ability to swiftly dart away from potential predators.

Behavior & temperament

The Frankei Tetra is a social fish that thrives in small to medium-sized schools, exhibiting a hierarchical social structure where dominant individuals often assert themselves through displays of color and fin posturing. This species typically occupies the mid to upper levels of the water column, preferring to dwell in well-planted areas that provide cover. Breeding behavior is characterized by egg scattering, where females release eggs over vegetation, allowing them to adhere and develop in relative safety. The temperament of the Frankei Tetra is generally peaceful, making it suitable for community tanks; however, they can exhibit territorial behaviors during spawning, particularly among males.

Diet & feeding

In the wild, the Frankei Tetra is an omnivore, 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 'hyphē' meaning 'under' and 'sōbrycon' meaning 'to swim'); frankei (named in honor of a person or locality associated with 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 Frankei Tetra?

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