| Water values: | soft to medium hard |
| Origin: | South America |
| Pelvic region: | Center |
| Fish group: | Tetra |
| with dwarf crabs?: | Yes |
| with snails/shells?: | Yes |
| Planting possible?: | Yes |
| Diet: | omnivorous - omnivorous |
| Final size: | 1-4 cm |
| with shrimps?: | with dwarf shrimp, offspring may be eaten |
| Difficulty: | 2 - Normal |
| Visual effect: | Swarm behavior |
| Breeding: | medium |
| Aquarium size: | 54 l (approx. 60cm) |
| Temperature: |
25-30 °C |
Originally, Blue Blackbanded Tetras, scientifically described as Hyphessobrycon melanostichos only in 2006, originate from the Tio Tapajo- Rio Doze de Outubro in Brazil. Hyphessobrycon is derived from the ancient Greek and means something like "small Brycon". Melanostichos means "with black band". With their lively nature and fascinating mating behavior, they are great aquarium co-inhabitants that always provide a good mood. In addition, they are very easy to care for, which is why they are so interesting for beginners or those returning to the aquarium and can be easily socialized.
The Blue Blackbanded Tetras have a slight high back with flattened sides as well as a rather gray base color. A distinct black band runs along the lateral line. The upper back has blue-green shiny scales, which iridesce differently and multifaceted depending on the incidence of light. The animals also have the typical salmon adipose fin behind the dorsal fin, as well as a pronounced and extended anal fin. At courtship time, especially the males color more intensely and also develop red fins, but this behavior can also be seen in smaller fights. They grow to a size of about 3.5-4 cm and are about 4-6 years old. Breeding in the aquarium is possible according to literature, they are free spawners.
Like most tetras, the Blue Blackbanded Tetra should be kept in aquariums with an edge length of 80 cm or more. Since they derive their strength from group size, keeping in groups of 8-10 animals or more is recommended. The aquarium may be calmly more strongly verkrautet in the background and at the sides, here the animals retreat to recover. However, since they are also quite swim-joyful, should be paid attention with the tank design to sufficient free swimming space. With a dark substrate and an infrastructure of roots but also rocks, the Blackbanded Tetra can be offered visual protection, but also territorial marking points. The aquarium water should have a total hardness of up to 25 °dGH, and a pH between 6.5 and 7.5. At temperatures between 23-28 °C the animals feel very comfortable.