Rikuzen flounder Rimmed-scaled goby Rimspine searobin Ring wrasse Ring-backed pipefish Ringed barracudina Ringed blenny Ringed flounder Ringed moray Ringed pipefish Ringed toadfish Ringed torpedo Ringeye conger Ring-eye pygmygoby Ringneck blenny Ringtail cardinalfish Ringtail maori wrasse Ringtail pike cichlid Ringtail snailfish Ringtail surgeonfish Ringtail tonguefish Ring-tailed cardinalfish Rio anchovy Rio de la Plata onesided livebearer Rio Grande chub Rio Grande cichlid Rio Grande Cutthroat Trout Rio Grande darter Rio Grande shiner Rio Grande silvery minnow Rio Grande sucker Rio Negro pygmy anchovy Rio pearlfish Río Salado darter Rio skate Rio Verde catfish Ripon barbel Rippled blaasop Rippled coralgoby Rippled klipfish Rippled rockskipper Ripplefin tonguesole Ripsaw catfish Risso’s dragonet Risso's smooth-head Rita Rivas's limia River blackfish River carpsucker River cat