Neon tetras (Paracheirodon innesi ) are one of the amounst the most popular of community fish and an excellent choice for those new to keeping fish as well as an excellent adittion to the more seasoned collection. Their size hen on display at pet shops is often under 2 cm and at full size, they reach no bigger than about 3.5 - 4 cm in length. If you like color in your aquarium fish, the Neon tetra will add real sparkle and flash to any aquarium.
A silverey fish which darkens to a pleasing iridescent blue along its back, the neon tetra also has a bright red tail. In addition, these active little fish like to shoul in groups of 6 or more, so a tank of neon tetras continually flashes with red, silver-white, and blue!Although they are in the same family as the Piranha, neon tetras are completely peaseful fish and if kept with more aggressive types are more apt to become prey than predate. There diet can cosist mostly of commercially avaliable tropical fish flake such as King British or Tetra and can be sublimented with bloodworm (live, Frozen, Dried and pelleted) Krill (Pelleted) veg Pellets, brineshrimp etc Neon teras prefer well oxygenated slightly acisic water conditions wth a darker substrate and plenty of live plants, this more accuratly reflects their natural surroundings of the amazon basin, althogh almost all of those commercially avaliable are mass bread either in europe or in indonesian fish farms.
One major problem with the neon tetra is its susceptibility to neon tetra disease. When you buy your fish, inspect them closely for any signs of disease or weakness. Physically a sick fish will be paler in color than the healthy ones, but an easy way to spot illness is when a neon prefers to be alone rather than joining in its school. Unfortunately, there is no cure for neon tetra disease. In its advanced stages, the fish becomes crippled. It loses use of its tail and its spine is noticeably curved. Neon tetra disease is a degenerative disease, believed to be caused by environmental factors. Because of this, it isn't thought to be contagious, but it will keep affecting your school until you have rectified the conditions that cause it. Common causes of neon tetra disease include poor water conditions and harassment by other fish. Neon tetras are also very sensitive to loud noises and bright lights. Neon Tetras will not tolerate dramatic changes to their environment.
With that in mind, you will need to introduce these fish to their new home patiently. Open the bag that you brought the fish home with before placing into the aquarium. Fold down the bag to help it retain shape. Allow the bag to float in the aquarium and replace ten percent of the water from the bag with water from your aquarium every five minutes for a period of at least forty minutes. After this period of acclimation, submerge the bag and wait for the fish to swim out freely. You may need to hold the bag open during this process to allow them space for exit. By tempering them to their new environment with this method your fish will adjust with less mortality. When kept with other fish, consider the aggressive behavior and size of potential tank-mates. Neons cannot be kept with predator type fish or anything that is large enough to eat them, including the innocent looking Angelfish. They will also not do well with fish that will harass them, such as Barbs, Danios, or Gouramies