Guppies are tiny, easy-care fish that grow up to 1.6 inches ... Dwarf Gouramis can be bright blue or turquoise with red-orange vertical stripes, red or orange with contrasting blue stripes ...

A properly dressed male guppy, with its gaudy blue spots and brilliant splashes of orange, can't help but stand out. But for a fish that spends its life swimming among predators, it seems that ...