Yellow
Yellow fancy guppies are a selectively bred color variety of the domestic guppy, Poecilia reticulata. The name is used for lines in which males show clear lemon, butter, or golden yellow over the body, dorsal fin, and especially the caudal fin, sometimes with white, black, or metallic accents depending on the strain. Females are usually larger and plainer, although well-bred lines may show yellow in the tail. The variety belongs to the broad fancy guppy hobby rather than a separate breed in the livestock sense.
In aquariums, yellow guppies are kept like other fancy guppies: warm, clean, moderately hard water, peaceful tankmates, and cover for fry if breeding is allowed. They are livebearers, so a small group can produce many young, and females may drop fry after being separated from males. Breeders trying to maintain strong yellow color usually keep related lines organized and select for fin shape, vigor, and clean pigment instead of pairing any attractive yellow fish together.
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