Here's what rhymes with flatfishes.
                        
                        
                    
                                catfishes  Words that almost rhyme with flatfishes
radishes  averages  parishes  ravages  vanishes  affixes  banishes  languishes  brandishes  anguishes  famishes  blandishes  carriages  manages  cabbages  vanquishes  vantages  establishes  adjectives  sandwiches  calyxes  repackages  cicatrixes  advantages  prepackages  reestablishes  disadvantages  undercarriages  disestablishes