| Haarukkapalasilli |
| haberdine |
| habitat |
| habitus |
| hachures |
| hadal |
| hadalpelagic |
| Haddock chowder |
| hadobenthic |
| hadopelagic |
| haemal spine |
| haematophagus |
| Hagfishes |
| Hairyfish and tapetails or ribbonbearers |
| Hakes and burbots |
| half spent fish |
| half-life |
| Half-salted fish |
| Half-saved |
| half-sibs |
| halfbeak stage |
| Halfbeaks |
| halieutic |
| halieutics |
| haline |
| hallucinogenic fishes |
| Halmahera Sea |
| halo |
| halocline |
| halolimnic |
| halophilous |
| Halosaurs |
| hammer-shaped |
| Hammerhead sharks |
| Hampen |
| Hamsi macunu |
| hamular |
| hanyak |
| hapantotype |
| hapas |
| haploid |
| haptobenthos |
| Hard cure |
| hard roe |
| Hard smoked fish |
| hard water |
| hard-copy |
| Hard-dry |
| hardness |
| Hardware |
| Hardy-Weinberg equilibrium |
| Hardy-Weinberg law |
| harem |
| Hareng saur |
| harling |
| harpoon |
| harpooning |
| Hartsalzung |
| Harvard University Museum of Comparative Zoology, Cambridge, USA |
| hastate |
| hatch |
| hatch box |
| hatchery |
| hatching |
| hatching jar |
| hatching trough |
| hatchling |
| haul |
| Havyar |
| Hawkfishes |
| head |
| head boat |
| head clasper |
| head crest |
| head depth |
| head length |
| head rope |
| head spines |
| head width |
| headed fish |
| header |
| headline |
| headwaters |
| Heavy fish |
| Heavy salt |
| Heavy salted |
| Hebrew University, Jerusalem |
| hectographing |
| Heincke's law |
| Heitreykt |
| helical |
| helophilous |
| hemi |
| hemibranch |
| hemiplankton |
| hemitrich |
| hen |
| hepat |
| Hepaticae |
| hepato |
| hepatosomatic index |
| herbicide |
| herbivore |
| herbivorous |
| Heringsstip |
| heritability |
| hermaphrodism |
| hermaphroditic |
| hermatypic |
| herpobenthos |
| Herrings |
| heteracanth |
| hetero |
| heterocercal |
| heterodont |
| heterodont dentition |
| heterodontoid |
| heterolecithal |
| heterosis |
| heterospecific |
| heterothermic |
| heterotroph |
| heterozygosity |
| heterozygote |
| hexanchoid |
| hiatus |
| hibernaculum |
| hibernation |
| hiemal |
| high island earthform |
| high islet lagoon |
| high islet ocean |
| high period |
| highly commercial |
| hill |
| hill(s) |
| Hillstream loaches |
| hindbrain |
| hindgut |
| Hingemouths |
| Hirudinea |
| histamine |
| histogram |
| histology |
| Hokkaido University, Faculty of Fisheries, Minato-machi, Japan |
| holarctic |
| hole |
| holo |
| holoblastic |
| Holocene |
| Holocephali |
| holoeuryhaline |
| holomictic |
| holopelagic |
| holoplankton |
| holosubantarctic |
| holothurian |
| holotype |
| home range |
| homeo |
| homeosmotic |
| homeostatic |
| homeotherm |
| homing accuracy |
| homo |
| homocercal |
| homodont |
| homodont dentition |
| homoeotherm |
| Homogenized condensed fish |
| homogenous |
| homogenous yolk |
| homoiotherm |
| homolecithal |
| homologue |
| homology |
| homonym |
| homonymy |
| homoplasy |
| homotherm |
| homozygote |
| horizontal classification |
| horizontal length |
| Horn sharks |
| horny |
| horny capsule |
| Hoshi-Nori |
| host-specific |
| Hot marinated fish |
| hot smoked |
| hot spring |
| hotspot |
| Houndsharks |
| hover |
| Hudson Bay |
| Humboldt State University, California |
| humeral |
| humeral process |
| humeral scale |
| humic lake |
| Huss |
| Hvidvirket klipfisk |
| hyaline |
| hyalodentine |
| hybrid |
| hybrid vigour |
| hybridization |
| hybridogenesis |
| hydrated eggs |
| hydric |
| hydro |
| hydrobiology |
| hydrodynamic noise |
| hydrograph |
| hydrographic survey |
| hydrography |
| hydrohaline |
| hydroid |
| hydrology |
| hydrophone |
| hydrosaline |
| hydrothermal vents |
| hydrotroph |
| hydrozoans |
| hyoid |
| hyoid barbel |
| hyomandibular nerve foramina |
| hyomandibular pores |
| hypaxial |
| hyper |
| hyperbenthic |
| hypercalcified structures |
| hypercapnia |
| hypereutrophic |
| hyperhaline |
| hyperlink |
| hyperphagy |
| hyperphyzation |
| hypersaline |
| hypersaline embayments |
| hypertext |
| hypertonic |
| hypo |
| hypobatic |
| hypobenthile |
| hypobenthos |
| hypobranchial |
| hypocercal |
| hypochord |
| hypodigm |
| hypogean |
| hypolimnion |
| hypopyle |
| hyporheic |
| hypothetical concept |
| hypotonic |
| hypoxia |
| hypoxic |
| hypsi |
| hypural |
| hypural bones |
| hypural crease |
| hypural fold |
| hypural notch |
| hypural plate |
| hypurals |
