Long Fin Black Widow Tetra to 3.5cm
These species originate from subtropical and tropical areas of Africa and South America, typically from tropical rainforest rivers and streams. Their origin stems back to when the African and South American continents were joined in one land mass.
Maximum Size and Longevity
Range from 2 – 12cm depending on species. Longevity ranges from around 1 year for some small species to several years.
The aquarium conditions required by these fish depend on their location of origin and cannot be generically listed. However, most Tetras purchased at aquarium shops are of South American origin and will do well in water that is soft and slightly acid.
Temperature: 20oC – 26oC pH: 6 – 7. 0 General Hardness: 50 – 150 ppm
Many Tetras are omnivorous and will readily take most types of aquarium foods used in the hobby. Due to the small size of many species, ensure that food particles are not too large for their small mouths. We recommend feeding a small dry pellet in conjunction with AI Naturals Range Frozen Tropical Mix, and Frozen Brine Shrimp to provide a balanced diet. Compatibility Tetras are best kept in large schools (minimum 6 in the group) and different species can generally be kept together with few problems. Tetras will also mix readily with a range of species and are generally an ideal community fish – however as many species are relatively small, it is not a good idea to mix them with species that grow large such as Oscars. Some species can be prone to eating aquatic plants
Colour and Varieties
Many species tend to have a silver coloured background to their body over which splashes of iridescent colours occur. There are a huge variety of colours such as the iridescent red and blues of Neon and Cardinal Tetras. The fins of many species also contain various colours and patterns. Today there are many species of commercially farmed Tetras that have different colour morphs (generally Albino or golden forms) or fins (long or short finned varieties).
Many species show no sexual dimorphism at all making sexing of the fish difficult. As is common with most species, females carrying eggs can often be seen as fish with a distended abdominal area. However, in some species traits such as longer fins, more elaborate colours or patterns and size differences can be used to tell male from female. Tank breeding of Tetras is often problematic due to their particular needs for water quality; however, many advanced hobbyists are able to breed most of the common species. Most commercial Tetra species are now farmed throughout Asia and even in indoor facilities in Europe, USA and Australia.
Tetras are the most common type of fish found in South America after catfish. Their name is commonly used for a large group of fish characterised by the presence of a small adipose fin between their dorsal and caudal fin. The term Tetra is actually not a taxonomic grouping, as many unrelated fishes from differing families have been commonly called Tetras. Tetras are the second most commonly kept fish in community tank setups, after livebearers (see our Livebearer Care Sheet for more information on these fish) . They are popular because of their vibrant colours, manageable size, mild behaviour and schooling habits.
We provide a wide range of exotic live animals that are by their nature, perishable. The duty of care for these animals passes to you the customer at the time we ship these items to you. eQuaria does not accept the return of live fish, coral or other perishable items. We recommend that you conduct your own research into the care of these animals and make educated buying decisions.
As eQuaria cannot control shipping processes, weather, airline delays and other unforeseen circumstance, fish mortality may occur. By purchasing these goods, you accept this risk and while every effort is made by eQuaria to ensure your fish arrive alive and well, no guarantees can be made.
eQuaria does not accept any Dead on Arrival (DOA) claims which is inclusive of freight and shipping costs. If you are unwilling to accept these terms, we invite you to purchase in store.