Tetra is the common nickname for many small fresh water lizards. These lizards are common in rivers and streams all over North America. Tetra is derived from the Latin word tetra meaning three. tetra fish belongs to the same biological family as all types of trout, in the order Characini, and has a gill system much like trout, though tetra has a streamlined body with triangular flaps where most of the fish’s mouth parts are found.
The most common tetra species is the rainbow (or neon tetra) variety, which is most readily available as a novelty or breeding stock. Tetra fish are also called blackwater tetras. In addition to being called tetra, these fish are also called blackfin tuna, blackwater halibut, blackwater barracuda, blackwater bass, blackwater pike, blackwater tarpon, blackwater coney, and the more obscure but commonly kept yellowfin tuna. These fish are also called black-finned peas because they have the dorsal and pelvic fins that are almost exactly like those of peas, only with black dots on them.
tetra can be difficult to care for and breed properly, especially because they are so unlike other freshwater fish that are commonly kept in freshwater aquariums. This is probably because many people don’t really understand their needs and want to keep a very large number of tetra in their aquarium. In fact, keeping tetra in an aquarium with other species can be disastrous, as these fish often fight and will attack any other fish in the tank, including the brine shrimp. Fortunately, tetra can be successfully kept with other animals if they are kept in a separate tank. Some tetra fish are also kept in schools.
The neon tetra is one of the easiest fish to care for, particularly compared to some of the other species that are commonly kept. The neon tetra can endure high levels of salinity, provided it has an efficient water filtration system. It is also quite easy to raise and breed, thanks in part to how they behave towards each other. In nature, neon tetra fish do not socialize with each other. However, this fish does well when kept in schools of ten or more, where it will be able to feel the presence of other tetra in its community.
Another important aspect of raising tetra for future breeding purposes is selecting the proper colors. Tetra fish do not generally accept other colors into their systems, though they will tolerate some of the more common colored tetra. Blue stripe is a highly preferred color, though it is not necessary to select this color if you don’t want it. A single blue stripe will suffice if you are willing to spend a lot of time and money looking for other colors. There are even several variations on the tetra color pattern, including green and yellow stripes, which look stunning when merged together.
While neon tetra colors are relatively easy to obtain and grow, it is sometimes necessary to select other tetra species to ensure that all tanks are beautiful. One option is to keep a selection of cardinal tetra, which is a different version of the popular neon tetra. Cardinal tetra fish do not usually carry the red stripe, but they do carry the blue stripe. They are also smaller than the typical tetra, ranging from six to eight inches in length.