Black Widow Tetra

Black Widow Tetra - AllPondSolutions

Black Widow Tetra

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Scientific Name: Gymnocorymbus ternetzi

Please note – The image used above is for illustration purposes only; Size, colour and sex may vary. Many of our livestock species are sold as juveniles and have not yet reached their full size and colour potential. If you have any concerns about the size or colour of the livestock you wish to order, please contact our livestock team via our support centre before placing your order. Due to the large quantities of livestock orders daily, the livestock team will are unable to select fish / shrimp to meet specific gender or aesthetic needs.

Approximate purchase size : 2 - 3cm
All Pond Solutions will always endeavour to supply as close to the approximate size range as possible. Due to variations from suppliers on rare occasions this may not always be possible. Images used are to show the full potential of the fish when fully mature and are not always representative of juvenile specimens.

How easy are they to care for?
A largely hardy species that is ideal for beginners to the hobby

How large can they grow?

Where in the world are they from?
Black widow Tetra are from the Rio Paraguay and Guapor basins in Brazil and Argentina.

What is the ideal number to keep together?
Black Widow Tetras are a shoaling species and are best kept in large numbers. For best results we recommend keeping at least 6 in a shoal - the more the happier they will be.

What water conditions do they require?
Ideally, slightly acidic water conditions are provided between 6.5pH - 7pH however they will happily live in conditions ranging up to pH of 7.5 or higher. Temperatures should range between 24-26°C.

What should you feed them?
Black Widow Tetra should be fed a variety of flake, frozen, freeze dried and live foods for a varied diet. Being omnivores they will happily accept a wide range of foods.

How compatible are they with other fish?
Black Widow Tetra are peaceful community fish and are generally accepted by a wide range of tank mates. Please see the compatibility chart below for more information.

Can they be bred in captivity?
Males are noticeably slimmer than the female, and have pointed dorsal and anal fins. Like most Tetra they are not parental so may eat spawned eggs, however, they are not difficult to breed, but will require a separate tank to raise fry.