Catfish rhymes with:
flatfish, flatfish, whitefish, angelfish, bottomfish, crawfish, cuttlefish, dealfish, dogfish, flatfish, goldfish, goosefish, guardfish, icefish, jellyfish, jewfish, lungfish, needlefish, pipefish, queenfish, redfish, sailfish, shellfish, starfish, sunfish, swordfish, whitefish
Catfish sounds like:
castoffs, cdebaca, codifies, cuddeback, cutback, cutbacks, cutoffs