Did a lil battle flag research on the interwebs (and we know how accurate and trustworthy that is).
Battle flags were often changed/updated (of course, since the record can change between patrols).
My collection, so far:
USS Aspro 309
USS Atule 403
USS Balao 285
USS Bang 385
USS Barb 220
USS Baya 318
USS Bergall 320
USS Besugo 321
USS Blackfin 322
USS Blenny 324
USS Bluegill 242
USS Bowfin 287
USS Bream 243
USS Cabrilla 288
USS Cero 225
USS Cobia 245
USS Cod 234
USS Croaker 246
USS Drum 228
USS Finback 230
USS Flasher 249
USS Flying Fish 229
USS Grouper 214
USS Growler 215
USS Gunnel 253
USS Haddock 231
USS Hake 256
USS Hammerhead 364
USS Harder 257
USS Icefish 367