Hyphessobrycon herbertaxelrodi common name black neon tetra.

They can grow up to 3-4 cm /1.5 inches. They are best kept in water parameters of PH range 5.5-7.0, and temperatures of 22-25 Celsius / 72-77 °F.

The black neon tetra is a lovely addition to a community fish tank. They are peaceful so will mix well with smaller fish. They are best in small groups, as on there own they can be shy.

The black neon only have small mouths so they only need small size foods. They will enjoy a diet of flake, small pellets, and mini granular food, and as a treat freeze dried frozen or live foods.