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Any of various fishes that bear live young, especially those of the subfamily Poeciliinae, which includes the guppy and the mollies.

live′-bear′ing adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈlaɪvˌbɛər ər)

any fish that bears living young, esp. any of various small viviparous tropical American fishes of the family Poeciliidae, as the guppy and molly.
live′bear`ing, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
The whale shark, Rhincodon typus, is a livebearer: 300 embryos found in 'megamamma' supreme.
These fish are a livebearer species, and as such, the females are larger and more rounded than the males.
"Fish" is perhaps the most universal "livebearer." Likewise, fish is the "livebearer" for us humans, who came long after: "the fish grew fins, then feet." And the advent of humans was the springboard for the entity of the self.
However, there was a significant flooding event during this period and flooding has been known to exterminate isolated populations of other livebearer species (Collins et.
Trophic ecology of the exotic Lerma livebearer Poeciliopsis infans (Cyprinodontiformes: Poeciliidae) in the Lago de Ptzcuaro, Central Mexico.
We collected the clingfishes described here along with multispotted goby (Sicydium multipunctatum) (sites 1-3), leopard splitfin (Xenotaenia resolanae) (sites 1-2), golden livebearer (Poeciliopsis baenschi) (sites 2-3), blackspotted livebearer (Poeciliopsis turneri) (site 2), mountain mullet (Agonostomus monticola) (site 3), and spotted sleeper (Eleotris picta) (site 3).
The most abundant exotics were the lerma livebearer Poeciliopsis infans (3,679 individuals and 83% of frequency), common carp Cyprinus carpio (1,721 individuals and 68% of frequency), and tilapiine cichlids Oreochromis spp.
Phylogeography of the livebearer Xenophallus umbratilis (Teleostei: Poeciliidae): glacial cycles and sea level change predict diversification of a freshwater tropical fish.
The Lerma livebearer Poeciliopsis infans (Woolman 1894) is a fish endemic to the Lerma-Grande de Santiago river basin and tributaries of the Ameca, Armeria, Coahuayana and Balsas rivers in Mexico (Miller et al.