InTheRiffle does a good job of explaining a good baitfish pattern. You can use these techniques and use other types of materials to get some other looks out of the flies you tie.
Steve Farrar SF Baitfish Recipe:
Hook: #4/0-#02 Tiemco 600SP
Thread: UNI Mono Thread
Body: White and Wild Olive Steve Farrar SF Blend
Underbody: Red or Hot Orange Schlappen
Eyes: 8MM-15MM Living Eyes or Clear Cure Goo Eyes
Glue For Body: Loon UV Fly Finish Thick or Clear Cure Goo
Curing Light: UV Laser or Loon Powerlight
Glue For Eyes: Brush On super glue/krazy glue
