Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
any of a family (Poeciliidae, order Atheriniformes) of small, tropical, American, freshwater bony fishes that bear live young rather than lay eggs, as the guppy, swordtail, and molly: commonly kept as aquarium fishes
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A fish, especially of the family Poeciliidae, that bears live young rather than depositing eggs.
- liveˈ-bearˌing adjective