Summary[edit] Description: Silver eels collected in Shenandoah River to be radio tagged for a tracking study. American eels begin sexual differentiation at a length of about 8 to 10 inches and, depending on eel density, become male or female silver eels. Credit: Maryland Fishery Resources Office, USFWS. Date: 13 September 2011, 12:13. Source: American eel. Author: U.S. Fish and Wildlife Service Northeast Region. Camera location38° 55′ 03.11″ N, 78° 11′ 36.67″ WView all coordinates using: OpenStreetMap 38.917530; -78.193519.
Summary[edit] Description: English: Anguilla dieffenbachii, 1875, New Zealand, by Frank Edward Clarke. Purchased 1921. Te Papa (1992-0035-2278/17). Date: 1875. Source: https://collections.tepapa.govt.nz/object/1206573. Author: Frank Edward Clarke (1849–1899) . . Description: scientific illustrator, scientist and ichthyologist. Date of birth/death: 1849 1 July 1899 . Location of birth: Suffolk. Authority control: : Q20683957. creator QS:P170,Q20683957. Permission(Reusing this file): No Know Copyright Restrictions.
Summary[edit] Description: English: European eel (Anguilla anguilla) in Gullmarn fjord at Sämstad, Lysekil Municipality, Sweden. Floating on the surface is a lot of pollen. Date: 12 July 2019, 10:25:56. Source: Own work. Author: W.carter. Camera location58° 25′ 21.77″ N, 11° 35′ 00.83″ EView all coordinates using: OpenStreetMap 58.422715; 11.583565. : This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Some debris in the water, mostly dead bugs, flies and birch seeds, have been removed.
Figures 2–9; Adult specimens (2, 3) and their teeth (4, 5) and gross morphologies (6, 7) and histological sections (8, 9) of the gonads of tropical anguillid eels, Anguilla marmorata, that were collected in Brunei Darussalam, Borneo Island: (2) BE-1, A. marmorata (962 mm in TL); (3) BE-2, A. marmorata (1352 mm in TL); (4) Narrow maxillary bands of teeth of BE-1; (5) Narrow maxillary bands of teeth of BE-2. The gonadal histology of Stage III (8; BE-1) showed oocytes with oil droplets mid-vitellogenic oocytes in the early maturation stage. The gonadal histology of Stage V (9; BE-2) showed mid-vitellogenic oocytes (arrows) in the final preparation for spawning. Gross morphologies of the gonads (6, 7) are indicated by arrows. Scale bars: 8, 9 = 50 µm.