4Fishkeeping is a big job. Find out what you need to know to keep fish healthy and happy. The grapheme /ow/ is featured in this title. Fishkeeping is part of Decodables by Jump!, a comprehensive library of decodable leveled readers that follow a sequenced approach to phonics instruction. Young readers will enjoy colorful, photo-packed nonfiction as they follow a prescribed format supported by the science of reading that encourages reading development.