Max Size: 3cm

Brittanichthys Axelrodi Tetra (Brittanichthys axelrodi)

The Brittanichthys axelrodi Tetra is currently considered a member of the family Characidae; however, their actual taxonomic position is uncertain.

The Brittanichthys axelrodi Tetra is a very small, peaceful and fragile shoaling fish that is relatively rare and not commonly seen in the hobby.

These Tetras are perfect for the nano or well-planted aquarium. However, due to their size and delicate nature, it would be best to keep them with their own kind. However, these Tetras may do okay if you have a large community aquarium with only small peaceful species. Males can sometimes be quarrelsome with their own kind, but it is nothing to worry about as no actual harm will follow.

Brittanichthys axelrodi Tetra is a true blackwater fish; therefore, filtering through peat can be very helpful. In addition to improving the chemical parameters, peat's bactericidal effect also reduces the aquarium's bacterial load. Adding dried leaves to the bottom of the aquarium, such as Indian almond or oak, can achieve the blackwater look in your home aquarium, as can driftwood and alder cones. The water will gradually darken and will mimic the water in their natural habitat.

Currently, there is little to no information about the Brittanichthys axelrodi Tetra. However, these Tetras have transparent bodies and fins except for a solid red stripe that runs from the caudal fin through to half of the posterior part of the body and a thin black line on the top edge of their dorsal fin.

Quick Facts
Scientific NameBrittanichthys axelrodi
Other NamesNone
OriginsBrazil, Colombia
Aquarium LevelMiddle - Top
Best kept asGroups 8+
Lifespan3 - 5 years
Water Parameters
Water TypeFreshwater
PH4.0 - 7.0
GH1 - 5
KH2 - 6
TDS20 - 215
76 - 82℉
24.4 - 27.8℃

Photos of the Brittanichthys Axelrodi Tetra

Brittanichthys Axelrodi Tetra
Brittanichthys Axelrodi Tetra

Natural Habitat

Brittanichthys axelrodi Tetras are endemic to the Rio Urubani, the Rio Demini, and the Rio Muco in the Rio Negro Basin in Brazil and Colombia in South America. They inhabit soft and acidic clear blackwater rivers and streams with substrates containing leaf litter and driftwood roots and branches.

What to feed the Brittanichthys Axelrodi Tetra

Brittanichthys axelrodi Tetras will accept virtually any form of aquarium food. However, when first introduced into the aquarium, they may shy away from food so initially provide them with live food.

Once settled into the aquarium, provide them with a balanced diet of high-quality dried food such as flakes, pellets and granules supplemented with frozen and live food such as brine shrimp, daphnia, Tubifex and bloodworm. It would also be beneficial to your fish if you gave them occasional green vegetables in their diet as this will help promote the best health and colour for your fish.

How to sex the Brittanichthys Axelrodi Tetra

It is somewhat straightforward to differentiate between the male and female Brittanichthys axelrodi Tetra. Males appear to be much more vibrantly coloured than females and have bony hooks on their anal fin, as well as having a curved caudal fin when mature. In contrast, the stripes of the female are much duller than the males, and they lack bony hooks.

How to breed the Brittanichthys Axelrodi Tetra

Unfortunately, there is limited information on the breeding habits of these fish; however, studies show that the males inseminate females with sperm rather than fertilising eggs externally like most Tetras. In addition, there doesn't seem to be any reports of the successful spawning of these fish.

Other Tetras of interest

African Moon Tetra(Bathyaethiops caudomaculatus)
African Red Eyed Tetra(Arnoldichthys spilopterus)
Black Darter Tetra(Poecilocharax weitzmani)
Black Line Tetra(Hyphessobrycon scholzei)
Black Neon Tetra(Hyphessobrycon herbertaxelrodi)
Black Phantom Tetra(Hyphessobrycon megalopterus)
View all Tetras
Date Added: 18/11/2021 12:44:46 - Updated: 02/12/2021 17:17:46