Neon Blue
Neon blue is a selectively bred color variety of the fancy guppy, Poecilia reticulata, named for a bright electric-blue sheen on the body, caudal fin, or both. In aquarium trade language the label may cover several related looks: a blue metallic body with clear fins, a vivid blue tail on a pale fish, or blue layered over cobra, grass, dragon, or dumbo ear backgrounds. Mature males usually show the strongest color and longer fins, while females tend to be larger and plainer unless the line has been selected for colored tails.
Neon blue guppies are kept like other livebearing tropical fish, but a consistent strain needs more than a pretty community tank. Warm, clean, moderately hard water and varied small foods help color and fertility, and fry do best with plant cover or a rearing tank. Females can store sperm, so breeders who want predictable neon blue offspring isolate virgin females or maintain separate breeding groups. Mixing blue, platinum, Japan blue, and mixed-shop fish can produce attractive fry, but it quickly blurs the line.
Colors: Albino, Bicolor, Blue, Cobra, Dragon, Dumbo Ear, Endler, Grass, Green, Half-Black, Japan Blue, Koi, Leopard, Metal, Mosaic, Moscow, Multicolor, Neon Blue, Platinum, Red, Snakeskin, Solid, Tuxedo, Wild Type, Yellow