from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A fish, especially of the family Poeciliidae, that bears live young rather than depositing eggs.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A live-bearing aquarium fish, one that retains the eggs inside the body and gives birth to live, free-swimming young.
live + bearer (Wiktionary)
Jack Dempsey fish and green sailfin mollies, along with a kind of livebearer fish I didn't recognise.