Blue Eyed Congo Tetra Care Guide
Phenacogrammus aurantiacus · Freshwater Fish
What Blue Eyed Congo Tetra look like
The Blue Eyed Congo Tetra (Phenacogrammus aurantiacus) exhibits a laterally compressed, fusiform body shape, reaching a maximum adult size of approximately 3 inches (7.5 cm). This species is characterized by a striking silver body that displays a warm golden-orange iridescence, particularly pronounced in well-conditioned individuals. Males often exhibit sexual dimorphism through the development of elongated fin extensions, particularly in the anal and dorsal fins, which are more pronounced than those of females. The species possesses a distinct lateral line system that aids in hydrodynamic sensing. The dentition is small and conical, suitable for an omnivorous diet, while the presence of an adipose fin further enhances its streamlined morphology, contributing to its agile swimming capabilities. The bright blue eyes serve as a unique morphological feature, enhancing its visual appeal and likely playing a role in social signaling.
Behavior & temperament
The Blue Eyed Congo Tetra is a social fish that thrives in groups, exhibiting a tendency to form loose schools in the mid to upper water column of their aquatic habitat. They are generally peaceful but can display hierarchical behaviors, with dominant individuals often asserting their status through fin displays and posturing. This species is primarily pelagic, preferring to inhabit the open water rather than the substrate. During breeding, they are egg scatterers, releasing their eggs in a manner that allows for external fertilization, typically in dense vegetation. Their temperament is generally calm, but they may exhibit slight territoriality during breeding periods, particularly among males.
Diet & feeding
In the wild, the Blue Eyed Congo Tetra is an omnivore, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, they thrive on a balanced diet of high-quality flake foods, supplemented with live or frozen foods such as brine shrimp and daphnia to ensure optimal health and coloration.
Behind the name
Phenacogrammus (deceptive line; aurantiacus (orange-yellow))
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 Eyed Congo Tetra?
AquaLens identifies your fish and plants from a photo, tracks water chemistry, and flags health issues early — free on iOS and Android.
