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 good ...

Male Trinidadian guppies (Poecilia reticulata) that co-occur with a large, predatory prawn, Macrobrachium crenulatum, have colour patterns that are strikingly different from those of guppies that ...