One of the tips to avoid stress on Neon Tetra fish or other freshwater aquarium fish is the selection of aquarium sand which used as a place or medium of the water plant roots. Terms of safe aquarium sand to use is lime free, measuring about 2.5 mm, smooth enough so as not to cause dirt in and make pollutions, also not shaped taper, which can injure the Catfish tentacle when down the aquarium sand. In addition of the three conditions above, not recommended to use the light-colored aquarium sand for tropical ornamental fish that are kept because they will be easy to stress in aquarium with the light-colored sand.

Associated with the color of aquarium sand , if observed, there are many species of freshwater ornamental fish that have a dark dorsal. Including in the tetra fish species such as Neon Tetra and Cardinal Tetras. This is to camouflage the body color of the predators from above, because the bottom waters where he comes are dark too. In contrast, abdominal color of "freshwater aquarium fish" actually light-colored. This is to camouflage the bottoms predators which look toward a bright sky.

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Tropical ornamental fish species such as the Neon Tetra and Cardinal Tetra are among the most popular of all freshwater fish, adding a touch of brilliance and social interaction to the community aquarium. Besides two tetra types above, the Black Neon Tetra (Hyphessobrycon herbertaxelrodi) also one of the aquarium fish species with a most beautiful and unusual coloration. And like other Tetras, the Black Neon Tetra do best in a well-planted aquarium with moderate lighting.

The body of the iridescent Black Neon Tetra is an elegant blend of deep obsidian black paired with a contrasting bright, neon horizontal stripe of yellow-green. A fluorescent orange marking above its eyes completes the telltale markings of the Black Neon Tetra. Praised for its peaceful nature, the Black Neon Tetra is a great addition to any soft water community aquarium.

The distinct coloration of the Black Neon Tetra complements the shaded green and yellow hues of most freshwater plants. In turn, the plants offer hiding places for the Black Neon Tetra. The addition of rocks and driftwood also help mirror its natural habitat. The Black Neon Tetra thrives in slightly acidic water and will do best when water parameters are kept constant. Black Neon Tetra is a schooling fish and will do best if kept in odd numbers of 5 or more.

Feeding: Black Neon Tetras will accept many small foods such as brine shrimp or daphnia, freeze-dried bloodworms and tubifex, micro pellet food, and a high quality flake food.

To breed Black Neon Tetras or Hyphessobrycon herbertaxelrodi , separate a pair into a "breeder tank" with no lighting at first, and then gradually increase light levels until spawning occurs. To encourage breeding, water hardness should be less than 4 KH. Live foods such as mosquito larvae are another great inducer. Be sure to remove the adult Black Neon Tetra after the eggs have been laid, as they will eat the eggs. The eggs should hatch within 30 hours.

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Among other tetra fish, Neon Tetra (Paracheirodon innesi) and Cardinal Tetra most famous because his tiny body shape and color are very beautiful. Body shape is flattened to the side with the color yellow-brown dorsally and yellowish white belly.

The characteristics of the most easily recognizable is the presence of such a line of blue neon green elongated on both sides of his body, and under fluorescent lines that there is a red line on, but not all the neon colors.

The fin of NeonTetra fish is actually clear, except for a red tail fin. Peaceable nature, makes neon tetra can be blended with other types of ornamental fish in an aquarium. The beauty of Neon Tetra fish will appear more clearly in a state when swimming clustered together to form a line.

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