R
- Rabbitfish
- Raccoon butterfly fish
- Ragfish
- Rainbow trout
- Rainbowfish
- Rasbora
- Ratfish
- Rattail
- Ray
- Razorback sucker
- Razorfish
- Red salmon
- Red snapper
- Redfin perch
- Redfish
- Redhorse sucker
- Redlip blenny
- Redmouth whalefish
- Redside
- Redtooth triggerfish
- Red velvetfish
- Red whalefish
- Reedfish
- Reef triggerfish
- Regal whiptail catfish
- Remora
- Requiem shark
- Ribbon eel
- Ribbon sawtail fish
- Ribbonbearer
- Ribbonfish
- Rice eel
- Ricefish
- Ridgehead
- Riffle dace
- Righteye flounder
- Rio Grande perch
- River loach
- River shark
- River stingray
- Rivuline
- Roach
- Roanoke bass
- Rock bass
- Rock beauty
- Rock cod
- Rocket danio
- Rockfish
- Rockling
- Rockweed gunnel
- Rohu
- Ronquil
- Roosterfish
- Ropefish
- Rough pomfret
- Rough scad
- Rough sculpin
- Roughy
- Roundhead
- Round herring
- Round stingray
- Round whitefish
- Rudd
- Rudderfish
- Ruffe
- Russian sturgeon
Read more about this topic: List Of Common Fish Names