FishLore: Livebearer Fish Species - Provides photos and profiles on the molly, guppy, platy and swordtail. - http://www.fishlore.com/profiles-livebearers.htm
British Livebearer Association - Articles, membership and newsgroup details and auction information. - http://www.britishlivebearerassociation.co.uk/
Fish Ark Mexico - A non-profit organization dedicated to the conservation of Mexico's diverse fishes. Pictures of Goodeids, Xiphophorus and other livebearers. - http://home.clara.net/brachydibble/
Molly Profile - Descriptions of the three common types of mollies. - http://badmanstropicalfish.com/profiles/profile24.html
Description: Sailfin Molly - A biological profile of the Poecilia latipinna. - http://www.flmnh.ufl.edu/fish/Gallery/Descript/SailfinMolly/SailfinMolly.html
Molly - Basic information on this fish. - http://www.thetropicaltank.co.uk/Fishindx/molly1.htm
Raising and Care of Belonesox belizanus - An article on keeping the Pike-top minnow. - http://www.fishbreeding.dk/frame.html?artikler/art_b_belizanus.html~Main
Animal Library: Fish: Mollies - An article on the keeping of mollies in environments ranging from marine to freshwater. - http://www.saltcorner.com/sections/zoo/mollies.htm
Tropical Fish - Breeding Livebearers - A brief introduction to breeding livebearing fish, describing what is needed and how to get started. - http://fish.orbust.net/livebearers.html
Gambusia Control Homepage - The effect of Gambusia introduction on native aquatic fauna. - http://www.gambusia.net/
The Xiphophorus Home Page - Research, identification photographs, and links pertaining to the genus Xiphophorus. - http://www.xiphophorus.org/home.htm
External Livebearer Anatomy Refresher - A guide to the most commonly referenced anatomical features of the family Poeciliidae, with names of fins and body parts. - http://www.interaktv.com/fishanat/basic_fish_anatomy.html