Behaviour Peaceful but may nip long-finned fish
Typical size 4cm
Max size 6cm
Tank Area Middle, top
Min Tank Size 60cm
Min Number 5
Temp Min: 20℃ Max: 26℃
Feeding Flake, frozen, live foods
pH Range 5.5-8.5
Black Widow TetraGymnocorymbus ternetzi
The Black Widow Tetra is a peaceful shoaling fish, which is very hardy and suited to a wide range of water conditions. After around a year, the black colour begins to fade to a washed out grey appearance and the fish no longer shoals, preferring its own space. Although very peaceful, the Black Widow Tetra will nip at long finned fish such as Guppies or Siamese Fighting Fish. Keep in aquariums with some hiding spots amongst plants. A good aquarium fish.
Have a Black Widow Tetra Problem or General Question?
If you have a question about keeping Black Widow Tetra's then please use our Black Widow Tetra help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them.