Fish.
Fish. is an author's abbreviation for biologists
- Fish. → Fish.Waldh. - Alexander Grigoryevich Fischer von Waldheim (1803-1884), German-born Russian botanist (and doctor)
- Fish. - Friedrich Ernst Ludwig von Fischer (1782-1854), German-Russian botanist
- Fish. → G.Fisch.Waldh. - Gotthelf Fischer von Waldheim (1771–1853), director of the Natural History Cabinet in Moscow
- Fish. → Fischer - behind Latin names of molluscs: Paul Henri Fischer (1835–1893), French malacologist
