R. D. Bartlett began his pet fish-keeping when he netted minnows out of the brooks near Springfield, Massachusetts. He moved to Florida and began working as the general manager for Aquarium Supply, a tropical fish, goldfish, and koi wholesaler, and then opened his own pet shop.

Patricia Bartlett grew up in Albuquerque, New Mexico, and began keeping fish at age 10. She has journeyed to Costa Rica and Peru to net and write about angelfish, discus, and knife fish. She is a recent convert to the wonderful world of koi.
The Bartletts have co-authored numerous pet care books, mostly centering on reptiles and amphibians.