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Black Widow Tetra 3.5cm

Black Widow Tetra 3.5cm
  • Buy 5 for $3.95 each and save 13%
  • Buy 10 for $3.60 each and save 20%

Availability: In stock



This is one of the very popular tetras, hardy, peaceful and attractively patterned in black. An active fish that schools in open water, they are an ideal fish for community aquaria. Black Widows grow to about 5cm

Tetras are considered easy to keep in a community aquarium of at least 20L, with a pH of 5.0–7.0 and KH of 1.0–2.0. However, they will not tolerate dramatic changes to their environment. The Tetra can live 10 years or more with the proper conditions. They tend to be timid and, because of their small size, should not be kept with large or aggressive fish who may bully or simply eat them.

Fish that mix well in an aquarium are other types of tetras, and other community fish that live well in an ideal Tetra water condition. Mid-level feeders, they are best kept in schools of five to eight or more, for the "shoaling" effect when they move around the tank. They shoal naturally in the wild and are thus happier, more brightly coloured, and more active when kept as a shoal as opposed to singly.

Tetras are best kept in a densely planted tank with subdued light and an ideal temperature of 20–24?C to resemble their native Amazon environment. Tetras are omnivores and will accept most flake foods, but should also have some small foods such as brine shrimp, daphnia, freeze-dried bloodworms, tubifex, and micro pellet food to supplement their diet.
Additional Information

Additional Information

Scientific Name No
Size 3.5

Customer Reviews 4 item(s)

Fantastic community fish
What a wonderful addition to my community fish. They are lively and on the go. Very healthy looking from the packaging to their new home. Fantastic community fish. Very happy thank you Live fish:)
Customer Rating
Review by MarriAnne / (Posted on 15/05/2018)
i love these fish
they are cute and like to swim together and seperatly, always hungry
Customer Rating
Review by Duncan / (Posted on 26/10/2010)
Bought Three of these guys just to mix it up in my tank, needless to say it wasn't hard to figure out which one was alpha since when they arrived two of the three had there fins nipped. They fit in relay well in the tank. and seem very happy just to swim around in there group.
Customer Rating
Review by FIsh_man / (Posted on 21/10/2010)
these are the best to look at
these are the best to look at of these fish i just had 6 arrive and everyone likes the look of them, have these in the tank with 10 bristlenose catfish and 6 gold widows, 6 black widows, 6 flame tetra, 6 glowlight and 6 bloodfin all seem very happy in my 4 foot tank
Customer Rating
Review by troy gerrard / (Posted on 16/07/2010)