The word oysterfishes is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 19
Highest Scoring Words With Friends™ Plays In The Letters oysterfishes
:
Seven Letter Word Alert: (46 words)
erotise, eyeshot, festers, fishers, fishery, fisheye, foister, forests, forties, fosters, hefters, heftier, heifers, heiress, heroise, hessite, heteros, hissers, history, hosiers, hosiery, hostess, isohyet, oysters, reshift, reshoes, resifts, resists, rosiest, sherifs, shifter, shrifts, shyster, sifters, sisters, softies, soirees, sorties, stereos, storeys, stories, storify, strifes, thereof, tossers, tresses