BILLFISHES is a playable word

billfish Scrabble® Dictionary

noun
pl. billfishes
a fish with long, slender jaws
129 Playable Words can be made from "BILLFISHES"
   2-Letter Words (14 found)
   3-Letter Words (27 found)
   7-Letter Words (6 found)
   8-Letter Words (1 found)
   10-Letter Words (1 found)