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see killifishkillifish,
any of more than a thousand species of small fish of the several families of the order Cyprinodontiformes (toothed minnows or toothed carps), a group that includes also the topminnows and many popular aquarium fishes (e.g.
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; mollymolly
or mollie,
New World fish of the genus Poecilia, which includes the guppy or rainbow fish, Poecilia reticulata. Mollies, which are related to the killifishes, are found from the E and central United States to Argentina.
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(Lebistes reticulatus), a fish of the family Poeciliidae of the order Cyprinoidae. The males measure up to 4 cm long and the females, up to 6 cm. The coloration of the males is a combination of black, red, light blue, silver, and gold tones. The females are gray, sometimes gold. The guppy is found in the freshwaters of Venezuela, northern Brazil, Guiana, and the islands of Barbados and Trinidad. It is one of the most popular aquarium fish. A number of varieties have been bred which are larger and more brightly colored than the original form, with elongated caudal (trailing) or dorsal fins (scarf).


Il’in, M . N. Akvariumnoe rybovodstvo, 2nd ed. Moscow, 1968.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


a small brightly coloured freshwater viviparous cyprinodont fish, Lebistes reticulatus, of N South America and the Caribbean: a popular aquarium fish
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Better yet, both the Zilla-Tool and Guppie are very affordable.
Dr Robert Heathcote, who led the study, said: "Trinidadian guppies can change their iris colour within a few seconds, and our research shows they do this to honestly communicate their aggressive motivation to other guppies.
Even though guppies grow to be only about 2-1/2" long, they still need plenty of space to swim around in.
Even as the guppies grew more cautious overall when faced with higher stress levels, differences in individual personalities persisted.
When Agrillo tested guppies against humans, both fell behind in accuracy for such difficult comparisons as 6 versus 8.
In other experiments male guppies and great tits have been found to be generally bolder than females and risky male behaviours have been shown to achieve male mating success in the fiddler crab.
Bubble Guppies: Good Boy, Bubble Puppy ($8.99) is the perfect book for 2014 Wall Calendar young fans of this adorable Nick Jr.
But here we are, his voice is deepening, his shoulders widening and he has become obsessed with tropical fish (what else did you think I was talking about?) And so Saturdays, which used to be spent arguing about whether Messi was better than Ronaldo, are now spent touring the shops, looking at tanks, gravel, guppies, neons, filters, lights and thermometers.
If l had a fishtank in my studio, I would fill it with guppies. I know that goldfishattract wealth, but guppies attract poetry.
I think about guppies all the time pale fawn fluff of these first winter beans of george the fifth's one thousand pheasants of those morning glories those peach trees those rain storms and those floods of the sangha the dharma the buddha and of edward over there, not a gibbon, not a gorilla, just a new moon waxing squiggly and recalcitrant