| r |
| r-selected species |
| r-selection |
| Rabbitfishes |
| race |
| Racehorses or pigfishes |
| raceway |
| rack |
| Rackling |
| radial |
| radial formula |
| radiation |
| radiograph |
| radiometric ageing technique |
| radius |
| Raffles Museum of Biodiversity Research |
| raft |
| raft fishing |
| raft trap |
| Ragfishes |
| rains of fishes |
| raising |
| ram ventilation |
| ramification |
| ramifying |
| ramp-marine bench |
| ramus |
| ranching |
| rancidity |
| Random Access Memory |
| random distribution |
| rapacious |
| rare |
| rarity |
| Rassenkreis |
| raster graphics |
| rastrate |
| rate of fishing |
| rate of natural increase |
| ration |
| ravine pond |
| ray |
| rearing |
| rearing habitat |
| rearing pond |
| rebound potential |
| recent |
| reciprocal translocation |
| recombinant DNA technology |
| record |
| recreational fishery |
| Recrudescence |
| recruit-to-spawner ratio |
| recruitment |
| recruitment curve |
| recruitment overfishing |
| recruits |
| rectal gland |
| rectilinear |
| recto |
| recurved |
| Red algae |
| Red caviar |
| Red Data Book |
| Red herring |
| red patches on the skin |
| Red Sea |
| red tide |
| Red velvetfishes |
| redd |
| redescription |
| redfish oil |
| Redmouth whalefishes |
| reduced |
| reef |
| reef area |
| reef edge scarp |
| reef hole |
| reef islet |
| reef limestone platform |
| reef net |
| reef top |
| reef top openings |
| reef-associated |
| reference |
| reference level |
| reference point |
| referral |
| reflection of sound |
| reflexed |
| refuge |
| refugium |
| Refuse fish |
| regime shift |
| regulative capacity |
| rehabilitation |
| reinstate |
| reintroduced |
| reintroduction |
| reject |
| rejected name |
| rejected work |
| relational database |
| Relational Database Management System |
| relationship |
| relative abundance |
| relative conversion rate |
| relative fecundity |
| release |
| releaser |
| releasing stimulus |
| relict |
| relief |
| remnant fecundity |
| Remoras |
| reniform |
| Rensei-hin |
| rent |
| Repack quality herring |
| replacement name |
| replacement series |
| replacement yield |
| representativeness |
| reprint |
| reproducing |
| reproduction |
| reproduction curve |
| reproductive guild |
| reproductive isolation |
| reproductive load |
| reproductive potential |
| Reptila |
| reptile |
| Requiem sharks |
| reservoir |
| resident |
| residual fecundity |
| resilience |
| resolution |
| resorption of ova |
| resource partitioning |
| respiration |
| respiratory |
| response to selection |
| restocking |
| restoration |
| Retailles |
| rete mirabile |
| retention |
| retention curve |
| reticulate |
| reticulated |
| reticulation |
| reticulations |
| retina |
| retinal pigment layer |
| retro- |
| retrograde |
| retroperitoneal space |
| retrorse |
| reverberation |
| reversal |
| reversibility |
| Reynold's number |
| rheo- |
| rheokinesis |
| rheophile |
| rheophilic |
| rheophilous |
| rheophobus |
| rheoreceptor |
| rheotaxis |
| rhipidion |
| rhipidocercal |
| rhithron |
| rhizobenthos |
| Rhizopoda |
| Rhodophyta |
| rhombencephalon |
| rhomboid |
| rhomboidal |
| rhombomere |
| rhyacium |
| rhyacophilous |
| rhynchichthys |
| rib |
| Ribbonfishes |
| Ricefishes |
| richness |
| rictus |
| ridge |
| riffle |
| rift |
| Rigg |
| right bank |
| Righteye flounders |
| rill |
| ring net |
| ring trawl |
| ring valve |
| rings |
| Rio de La Plata |
| riparian |
| ripe fish |
| ripening |
| rise |
| risk |
| rival |
| river |
| river basin |
| River stingrays |
| riverain |
| riverine |
| riving |
| rivulated |
| rivulet |
| Rivulines |
| Roanoke College, Virginia |
| robust |
| robustness |
| rock-hopper trawl |
| rocker bone |
| rod |
| Rode kaviaar |
| roe |
| roe-off |
| roll line |
| Rolled fish |
| Rollmops |
| Rolmops |
| Ronquils |
| Roosterfishes |
| root |
| root coating |
| root effect |
| root lobe |
| rooting |
| rootwad |
| rosary ponds |
| roseate |
| rosette |
| rostral |
| rostral cartilage |
| rostral fold |
| rostral keel |
| rostral node |
| rostral spine |
| rostral teeth |
| rostromandibular muscle |
| rostronuchal muscles |
| rostrum |
| rotational fishery |
| rotenone |
| Roter Kaviar |
| Rotskjaer |
| Rouelles |
| rough fish |
| Round fish |
| Round rays |
| round weight |
| rounded |
| rounder |
| Roundheads |
| Roused fish |
| routine metabolism |
| Rovers |
| row |
| Royal British Columbia Museum, British Columbia |
| Royal Ontario Museum, Toronto |
| rubric |
| rudiment |
| rudimentary |
| rudimentary ray |
| rugae |
| rugose |
| run |
| runnel |
| runner |
| running ripe |
| runoff |
| Russische Sardinen |
| rusting |
| Rysk kaviar |
| Røkt hyse |
