Endler
Endler fancy guppies sit in a gray area between guppy strain, hybrid, and separate livebearer. The name comes from Endler's livebearer, usually treated as Poecilia wingei, a small Venezuelan relative of Poecilia reticulata. In the aquarium trade, fish sold as Endlers may be pure wingei, guppy-Endler hybrids, or fancy guppies bred to resemble Endler-type fish. Males are typically small and slim with bright patches of orange, black, green, blue, or yellow; females are larger and plain, which makes honest line history especially important.
Care is similar to guppy care, with warm hard water, plant cover, small foods, and steady filtration. The practical issue is stewardship: aquarists trying to preserve pure Endler lines should buy from keepers who track collection or strain names and should not mix them with ordinary fancy guppies. In community tanks, Endler-type fish are active, quick breeders, and their tiny fry need dense cover. Buyers should ask whether a line is pure, hybrid, or simply Endler-like, because the label is used loosely.
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