Guppies rhymes with:
puppies, yuppies, burpees, cappy's, copies, espy's, groppy's, groupies, herpes, hippies, krispies, mapi's, mississippi's, mississippis, philanthropies, photocopies, poppies, poppy's, puppies, recipe's, recipes, sharpies, sharpy's, therapies, tippy's, yuppies
Guppies sounds like:
gaffes, gap's, gaps, gasps, gebbie's, gibas, gibb's, gibbs, gibbs's, gibes, giveaways, giveback, givebacks, gives, gobs, goofs, goosefish, gopac, gopac's, gossips, govpx, govs, gozofsky, guavas, guba's, guffaws, gypsies, gypsy