| dacriform |
| Daeng |
| Daggertooth |
| Dahn line |
| dam |
| damping capacity |
| Damselfishes |
| Danish pond |
| Danish seine |
| daphnids |
| dark meat |
| Dark spotted moray |
| darwin |
| Darwinism |
| data |
| Data Definition Language |
| data dictionary |
| data flow model |
| data model |
| database |
| Database Management System |
| dataset |
| datastore |
| date of publication |
| daughter cell |
| Davis Museum of Wildlife & Fisheries Biology, California |
| Davis Strait |
| day degree |
| Dayton Museum of Natural History |
| DBF format |
| DDT |
| de novo vitellogenesis |
| death |
| debris |
| deca |
| decalcify |
| decapods |
| decibel |
| deciduous |
| deciduous scales |
| decision tree |
| decision-maker |
| declaration |
| declivous |
| decomposer |
| decomposition |
| decumbent |
| decurved |
| decussating |
| dedifferentiation |
| deep bottom area |
| deep epipelagic |
| deep lagoon floor |
| deep layer |
| deep pass |
| deep scaterring layer (DSL) |
| deep scattering layer |
| deep water |
| deep-sea |
| Deep-sea anglerfish |
| Deep-sea smelts |
| Deep-sea spiny eels |
| Deepwater cardinalfishes |
| Deepwater flatheads |
| Deepwater stingray |
| defaecate |
| defect |
| deficiency disease |
| definition |
| definitive host |
| deflected climax community (plagioclimax) |
| deformity |
| degenerate |
| degeneration |
| degradative succession |
| degree days |
| dehydrated fish |
| dehydration |
| delayed release |
| deleterious |
| deletions |
| Delicatessild |
| Delikatesill |
| Delikatessild |
| delimitation |
| delta T |
| demand feeder |
| deme |
| demersal |
| demersal egg |
| demersal spawner |
| demographic |
| denatant |
| denaturation |
| dendogram |
| dendritic |
| dendritic organ |
| denitrification |
| density |
| density dependence |
| dentary |
| dentate |
| denticle |
| Denticle herring |
| denticulate |
| dentigerous |
| dentine |
| dentition |
| deoxygenated |
| deoxyribonucleic acid |
| Department of Biology, Faculty of Science, Kochi University |
| Department of Life Sciences, University of New England, Biddeford, Maine |
| depauperate |
| depensation |
| depensatory |
| deposit feeder |
| depressed |
| depression |
| depth |
| Depth of caudal peduncle |
| derived |
| dermal |
| dermal bone |
| dermal flaps |
| dermal processes |
| dermatitis |
| dermatomycosis |
| dermatoses |
| dermis |
| dermocranium |
| Derris |
| Descargamento |
| description |
| desiccated |
| desiccated codfish |
| designation |
| desmids |
| determinate fecundity |
| deterministic |
| detrimental |
| detritus |
| Deutscher Kaviar |
| dew point |
| dewlap |
| dextral |
| diacritic mark |
| diadromous |
| diagnosis |
| diagonal calcifications |
| diallelic |
| diandric |
| diandry |
| diapause |
| diaphanous |
| diarrhea |
| diastema |
| diatom |
| diatoms |
| diced fish |
| dichlorvos |
| dichotomous key |
| dichromatic |
| dichromatism |
| Dicotyledoneae |
| diel |
| diencephalon |
| diet |
| dietary fiber |
| differentiation |
| diffuse spring |
| diffusion |
| diffusion coefficient |
| digenic |
| digestability |
| digestion |
| digitiform gland |
| digitiser |
| digitized format |
| dignathic |
| dilated |
| diluent |
| dilution water |
| dimethyl sulphide |
| dimictic |
| dimorphic |
| dimpling |
| Dinailan |
| dinoflagellate |
| dinogunellin |
| dioecious |
| dioxin |
| dip |
| dip net |
| dip-net |
| Dipartimento di Scienze ambientali, L'Aquila, Italy |
| diphagous |
| diphycercal |
| diplo- |
| diplobiont |
| diploid |
| diploidazation |
| Diplomystid catfishes |
| diplont |
| diplospondylous |
| diplospondylous vertebrae |
| direct length |
| directed fishery |
| directional selection |
| Directory Interchange Format |
| disarticulated |
| disc |
| discard |
| discharge |
| discharge plume |
| disciform |
| discoidal organ |
| Discomitochondria |
| disease |
| disinfectant |
| disinfection |
| disjunct |
| disjunct distribution |
| disjunction |
| disk length |
| disk width |
| dispermy |
| dispersal |
| dispersant |
| dispersion |
| displacement |
| dissemination |
| disseminule |
| dissolved organic matter |
| dissolved oxygen |
| dissolved volatile solids |
| distad |
| distal |
| distensible |
| distinctiveness |
| disturbance |
| diurnal |
| diurnal migration |
| diurnal rhythm |
| divergence |
| diversity |
| diversity index |
| diverticulum |
| division |
| Division of Fisheries Sciences |
| dizygotic |
| Djirim |
| DNA |
| DOC |
| doctor fish |
| Dog fish |
| Dogfish sharks |
| Dolphins |
| domestication |
| dominance |
| dominant |
| dopamine |
| Dories |
| dorsad |
| dorsal |
| dorsal and anal fin ray counts |
| dorsal fin |
| dorsicranium |
| dorsolateral |
| dorsoventral |
| dorsum |
| dose |
| dose-response curve |
| Dottybacks |
| double emarginate |
| double pump |
| Dragonets |
| drawdown |
| drawn |
| dredge |
| Dredged fish |
| dredging |
| dressed |
| dressed fish |
| dressing weight |
| dried fish |
| dried salted fish |
| drift net |
| Driftfishes |
| drifting longline |
| driftline |
| Driftwood catfishes |
| drills |
| dromous |
| dropline |
| dropline fishing |
| dropsy |
| Drums or croakers |
| dry caviar |
| dry fish |
| dry salted fish |
| dualistic reproductive behavior |
| Dubbel gerookte steurharing |
| Dubisch method |
| Dubisch pond |
| Duckbill eels |
| Duckbills |
| duct |
| ductus endolymphaticus |
| ductus pneumaticus |
| Duke University, North Carolina |
| Dulse |
| Dum fish |
| Dumb fish |
| Dun fish |
| duplications |
| durophagus |
| dusky |
| dwarfism |
| Dynamic Data Exchange |
| dynamite fishing |
| dys- |
| dysfunction |
| dysploid |
| dystrophic |
