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Black Widow Tetra 3cm

Black Widow Tetra 3cm
  • Buy 5 for $3.70 each and save 12%
  • Buy 10 for $3.40 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

Customer Reviews 14 item(s)

Simply Stunning
This tetra has to be one of my top 5 community fish to get!
From the superb black coloration to the stunning gray and silver that sparkles when the light hits on the right angle,I highly doubt you will regret your purchase.
(I recommend a big school of 10)
Hats off to you LiveFish
Customer Rating
Review by Elijah / (Posted on 3/10/2018)
Lovely Graceful Fish
We have three of these Tetras and they have settled in nicely. Very graceful. Get on well with other fish, one of my favourites.
Customer Rating
Review by Jan / (Posted on 8/12/2015)
Good all round
Ordered 5 the as expected very very pale on arrival, coloured up nicely once released into my tank, only issue I have is they seem to hide behind plants, hoping they will come out as they settle in more.
Customer Rating
Review by Jessi / (Posted on 13/08/2015)
Excellent community fish
Ordered two of these fish. Arrived safely with the rest of my order. Good condition and are great little fish. Schooling well with our other tetras. Colour a little pale but I'm sure they will brighten up in time. Wonderful to watch. Pleased with my purchase. Thanks Livefish!
Customer Rating
Review by Carmel / (Posted on 1/07/2015)
6 little dudes
going to do a planted tank soon but so far the little dudes is doing ok hanging out with our larger black widow and stuck with plastic plants at the moment.

like the pic, very happy bunched together.
Customer Rating
Review by natalia / (Posted on 5/03/2015)
Received them with the rest of my order. They were pale to begin with but within a hour they were turning black. Now they are so black it is great. Love them to bits. Never seen them before but they look great swimming together around the tank. They don't hide either which is what I like. Great purchase thanks guys you do a great job.
Customer Rating
Review by Leah / (Posted on 4/10/2014)
cute as
These are great little fish. I bought 5 of these as I had one lonely one. They arrived alive and well. Once let out into my aquarium they readily schooled with mine. Happy easy to look after and make a great school. Very happy with this order.
Customer Rating
Review by Leathal / (Posted on 15/09/2014)
arrived safe and well, like all the other fish
Unfortunately these fish, while good little fish in their own right, dint work with my community tank. they started to eat my beeta alive, so they had to go.
Customer Rating
Review by carl / (Posted on 8/08/2014)
I bought $300 worth of fish and they all arrived happy and health, not one fatality. I love my fish, watch them for hours.
Customer Rating
Review by carl / (Posted on 31/07/2014)
Very hardy
Very interesting fish. School well. Some i received were a little small, but seem to be going well.
Customer Rating
Review by Troy / (Posted on 7/04/2014)
great comunity fish
ordered 10 they arrived alive and healthy very pleased
Customer Rating
Review by eli / (Posted on 6/09/2013)
Beautiful community fish
Great personalities and are great in my community tank.
Customer Rating
Review by Shane / (Posted on 19/07/2013)
ordered half a dozen of these, arrived healthy.

Big eaters that love their flakes, and only seem to bother each other.

thanks livefish
Customer Rating
Review by R Bellette / (Posted on 30/06/2012)
I love these Tetra's
I love these Tetra's, I bought five of these guys, and they all arrived in really good conditon. They're a wonderful mid dwelling aquarium fish. Beautiful to watch in schools. Easy to look after, and friendly with other fish. Very pleased with order.
Customer Rating
Review by Heidi S / (Posted on 16/07/2010)