Freshwater Tetras

Dazzling dwarves – add a shoal of brilliant colour to your community tank with our range of tetras.

Tetras are a massively popular freshwater aquarium fish of the family characin, which consists of over 150 individual tetra species. Perfect for beginners and professionals alike, a small community tropical fish tank is rarely complete without a school of these hardy and beautiful fish. Read more
Show less

Tetras max out at 7.5 cm (3 inches) for the largest common species, with the majority of tetra species reaching only 3.8 cm (1.5 inches) max. They have relatively long lifespans, somewhere around 6 to 8 years being fairly typical for a healthy tetra. Most tetra species feature elongated bodies with iridescent scales and splashes of bright colours, though you will find a lot of diversity in shape and colour amongst this family.

Tetra Care

Almost universally low maintenance, tetras can handle fairly diverse water parameters. They are unfortunately quite prone to disease, so be sure to monitor for ammonia and nitrate spikes regularly, keep up with water change schedules and follow the quarantine rules before introducing new fish to your main aquarium. Other than this, tetras are easy to care for as long as you follow a few simple rules. By far the most popular tetra species (and arguably one of the most popular fish species in the hobby) is the Neon tetra, with other popular species including the Black Neon tetra, Diamond tetra, Rummynose Tetra and the more circular-bodied Golden Black Widow tetra.

Natural Habitat

Most tetra species are native to southern America, commonly found in the Amazon basin. However, being quite a diverse family, they can also be found in Central America and central-west Africa. A relatively new discovery has been that of the Blind tetra, found in Mexican cenotes. As a general rule, tetras enjoy cool active freshwater streams, but they can also be found in ponds, floodplains and tannin-stained lakes.

Behavior/Compatibility for Tetras

The vast majority of tetra species are peaceful and confident fish, though there are some exceptions to this. For example, the rare Bucktooth Tetra is an extremely aggressive fish that can dominate even cichlids, despite its less imposing size. Black widow tetras are known for fin-nipping more extravagantly-finned species such as Angelfish and should not be housed with any species that is susceptible to being bullied. As always, be sure to consult the individual species’ needs and behaviour before introducing them to your community tank. That said, most popular tetra species such as the Green Neon, Golden Neon, Cardinal Tetra or classic Neon Tetra, Cardinal Tetras, and Fire-ember tetras are wonderful community tank additions. Tetras are a schooling fish and should absolutely not be kept individually. The recommended shoal size depends on the species, but as a rule, no fewer than 10 tetras should be housed together, with more always being better. For the majority of tetra species, great tank mates include Swordtails, Corydoras catfish, Guppies, Rasboras and Danios.

Housing Tetras and Aquarium Fish Tank Set-up Tips

  • Tank

    Tetras require little room individually, but the necessity of keeping them in large groups will require a relatively larger aquarium. As a general rule, you should be keeping shoals of no fewer than 10 tetras, though this does vary between species. Tetras prefer lower light with slight water movement. Ensure your aquarium has a lid as they are known to jump. For brevity, the following table will be regarding the most popular smaller tetra species such as the Neon Tetra, Cardinal Tetra, and Fire-ember. Please check the individual requirements of your preferred species before purchase.

    Recommended Max Fish Count Tank Volume
    10 Tetras 39 litres (10 gallons)
    15 Tetras 47 litres (12.5 gallons)
    20 Tetras 57 litres (15 gallons)
    30 Tetras 72 litres (19 gallons)
  • Base

    Tetras are mid-level swimmers, meaning the type of substrate will not be a major concern. You may select this based on the needs of your other fish species. You should however opt for a dark substrate in which plants can grow well.

  • Foliage

    Tetras require a well planted freshwater aquarium, with bunching, leafy plants being optimal to help provide shade. Some of the best plants include Java Fern, Pennywort and Ludwigia. Some driftwood is also recommended as the dark shade really brings out the tetra’s colours.

  • Water

    Tetras prefer cooler, soft waters bordering on the acidic. They can handle a fairly wide range of parameters, but you should ensure ammonia and nitrate spikes are controlled before introducing tetras to your tank. Temperatures should be around 20 to 28 degrees C (68 – 82.4 F). Depending on your local climate, you may need to install a water heater to ensure the temperature stays within this range. You will find other aquarium decor and accessories in this section too, for example airstones or an air pumps for aquariums.

    Your Ph should be 5.5 – 7.5 and you should aim for a hardness of 5 - 15 DGH. To ensure your pH and hardness are suitable we recommend checking out our aquarium supplies and accessories section where you should invest in a testing kit. Always ensure your water is properly filtered, and regularly change the water (25% weekly or 50% every other week). This is especially important for tetras.

    You should also filter the substrate regularly and adjust the chemistry of any tap water you use to top your tank. You may do this with one of our many water conditioning products .

Feeding and Care

Tetras are mainly carnivorous, though some plant-based foods should also be provided. High-quality prepared fish foods like flakes and slow-sinking pellets are a great start, but live food like bloodworms, live or frozen brine shrimp and daphnia should also be provided. Vegetables such as broccoli, peas and cabbage should also be in their diet, though you must ensure they are well blended so the tetras can swallow the pieces whole.

Great reasons to keep Tetras in your tropical fish tank

  • • Tetras are typically a very passive fish that will get along very well with similar-sized friendly species
  • • Shoaling tetras add a lot of life and colour to any tropical fish aquarium.
  • • Tetras are easy to care for and should provide many years of visual pleasure.

Tetras are among the most popular species in the fish-keeping hobby today. You can shop for fish from our online tropical fish store, see the different varieties we currently have in stock below. Will you go for one of our packages of Mixed Neon Tetras, a pack of Classic Neon Tetras or Phantom Tetras or pick out a few species like the Purple Pencilfish or Dark Marble Hatchet fish.

Show less

Tetras

Set Descending Direction
View as Grid List

76 items

Page
per page
  1. 10x Cardinal Tetra 2.5cm Paracheirodon axelrodi
    Rating:
    0%
    $54.99
    Add to Wish List
  2. 10x Neon Tetra 2cm Paracheirodon innesi
    Rating:
    0%
    $37.99
    Add to Wish List
  3. 10x Neon Tetra 3cm Paracheirodon innesi
    Rating:
    0%
    $45.99
    Add to Wish List
  4. 10x Rummynose Tetra 3.5cm Hemigrammus bleheri
    Rating:
    0%
    $59.99
    Add to Wish List
  5. 20x Neon Tetra Mix Black, Green, Golden and Neon tetra mix
    Rating:
    0%
    $92.99
    Add to Wish List
  6. Albino Black Neon Tetra 2.5cm Hyphessobrycon sp.
    Rating:
    0%
    was $4.68 Special Price $3.28
    Add to Wish List
  7. Balloon Red Eye Tetra - Lampeye 3cm Moenkhausia Sanctaefilomena
    Rating:
    100%
    (1)
    Add to Wish List
  8. Balloon Red Eye Tetra Lampeye 4cm Moenkhausia sanctaefilomena
    Rating:
    0%
    was $11.00 Special Price $8.40
    Add to Wish List
  9. Black Emperor Tetra 3cm Nematobrycon Amphiloxusize
    Rating:
    0%
    Add to Wish List
  10. Black Emperor Tetra 5cm Nematobrycon amphiloxus
    Rating:
    0%
    was $12.61 Special Price $8.84
    Add to Wish List
  11. Black Line Silver Hatchet Fish 4cm Gasteropelecus sternicla
    Rating:
    0%
    $38.55
    Add to Wish List
  12. Black Neon Tetra 3cm Hyphessobrycon Herbertaxelrodi
    Rating:
    97%
    (7)
    Add to Wish List
  13. Black Phantom Tetra 3.5cm Hyphessobrycon megalopterus
    Rating:
    0%
    $7.77
    Add to Wish List
  14. Black Phantom Tetra 3cm Hyphessobrycon Megalopterus
    Rating:
    95%
    (4)
    was $7.72 Special Price $5.46
    Add to Wish List
  15. Black Widow Tetra 3.5cm Gymnocorymbus Ternetzi
    Rating:
    100%
    (6)
    Add to Wish List
  16. Black Widow Tetra 3cm Gymnocorymbus Ternetzi
    Rating:
    96%
    Add to Wish List
  17. Bleeding Heart Tetra 3.5cm Hyphessobrycon Erythrostigma
    Rating:
    100%
    (1)
    Add to Wish List
  18. Blind Cave Tetra 3.5cm Astyanax jordani
    Rating:
    100%
    (2)
    was $6.21 Special Price $4.81
    Add to Wish List
  19. Blue Emperor Tetra 3cm Inpaichthys Kerri
    Rating:
    0%
    Add to Wish List
  20. Buenos Aires Tetra 3.5cm Hemigramus caudovittatus
    Rating:
    100%
    (1)
    Add to Wish List
  21. Candela Tetra 1cm Hyphessobrycon candela
    Rating:
    0%
    $20.49
    Add to Wish List
  22. Cardinal Tetra 2.5cm Paracheirodon Axelrodi
    Rating:
    100%
    (4)
    Add to Wish List
  23. Cardinal Tetra 2cm Paracheirodon Axelrodi
    Rating:
    100%
    Add to Wish List
  24. Cardinal Tetra Spectacular 2.5cm 50x Paracheirodon axelrodi
    Rating:
    0%
    $189.99
    Add to Wish List
  25. Cochus Blue Tetra 3cm Boehlkea Fredcochui
    Rating:
    95%
    (4)
    Add to Wish List
  26. Congo Tetra 4cm Phenacrogrammus Interruptus
    Rating:
    60%
    (1)
    Add to Wish List
  27. Congo Tetra Male 5cm Phenacrogrammus Interruptus
    Rating:
    93%
    (3)
    Add to Wish List
  28. Costae Tetra 4.5cm Moenkhausia costae
    Rating:
    0%
    $13.49
    Add to Wish List
  29. Diamond Tetra 2.5cm Moenkhausia Pitteri
    Rating:
    100%
    (5)
    Add to Wish List
  30. Diamond Tetra 3cm Moenkhausia Pitteri
    Rating:
    100%
    (2)
    Add to Wish List
  31. Dwarf Pencil Fish 3cm Nannostomus Marginatus
    Rating:
    0%
    Add to Wish List
  32. Emperor Tetra 3cm Nematobrycon Palmeri
    Rating:
    80%
    (3)
    Add to Wish List
  33. Emperor Tetra 4cm Nematobrycon palmeri
    Rating:
    0%
    $9.39
    Add to Wish List
  34. Emperor Tetra Pack 15x Emperor tetra - Nematobrycon Sp
    Rating:
    0%
    $85.99
    Add to Wish List
  35. Fire - Ember Tetra 2cm Hyphessobrycon Amandae
    Rating:
    97%
    Add to Wish List
  36. Flame Tetra 3cm Hyphessobrycon Flammeus
    Rating:
    85%
    (4)
    was $5.43 Special Price $3.87 As low as $3.80
    Add to Wish List
  37. Glass Bloodfin Tetra 3.5cm Prionobrama Filigera
    Rating:
    95%
    (4)
    Add to Wish List
  38. Glolite Tetra 3cm Hemigrammus Erythrozonus
    Rating:
    100%
    (8)
    Add to Wish List
  39. Golden Black Widow Tetra 3.5cm Gymnocorymbus ternetzi
    Rating:
    0%
    $7.44
    Add to Wish List
  40. Golden Black Widow Tetra 3cm Gymnocorymbus Ternetzi
    Rating:
    93%
    (8)
    Add to Wish List
  41. Golden Neon Tetra 2.5cm Paracheirodon Innesi
    Rating:
    0%
    Add to Wish List
  42. Green Neon Tetra 2cm Hyphessobrycon Simulans
    Rating:
    95%
    (4)
    Add to Wish List
  43. Hyphessobrycon Robertsi Tetra 3.5cm Hyphessobrycon Bentosi - Thayeria spp
    Rating:
    0%
    Add to Wish List
  44. Lemon Tetra 3cm Hyphessobrycon Pulchripinnis
    Rating:
    73%
    (3)
    Add to Wish List
  45. Longfin Black Widow Tetra 3.5cm Gymnocorymbus Ternetzi
    Rating:
    100%
    (2)
    Add to Wish List
  46. Male Congo Tetra 6cm Phenacrogrammus interruptus
    Rating:
    0%
    Add to Wish List
  47. Male Congo Tetra 8cm Phenacrogrammus interruptus
    Rating:
    0%
    $32.43
    Add to Wish List
  48. Neon Tetra 2.5cm Paracheirodon Innesi
    Rating:
    100%
    Add to Wish List
  49. Neon Tetra 2cm Paracheirodon Innesi
    Rating:
    95%
    Add to Wish List
  50. Neon Tetra 3cm Paracheirodon Innesi
    Rating:
    100%
    (3)
    Add to Wish List
  51. Neon Tetra Spectacular Paracheirodon innesi
    Rating:
    0%
    $95.99
    Add to Wish List
  52. Para Tetra 3cm Aphyocharax paraguayensis
    Rating:
    0%
    $6.24
    Add to Wish List
Set Descending Direction
View as Grid List

76 items

Page
per page