Updated 6 Dec. 2024
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Bathylychnops Cohen 1958 bathýs (Gr. βαθύς), deep, referring to bathypelagic habitat; lýchnos (Gr. λύχνος), lamp, and ṓps (Gr. ὦψ), eye, referring to photophore and two other patches of “luminous tissue” projecting from a black sac on eyes of B. exilis

Bathylychnops brachyrhynchus (Parr 1937) short-snouted, from brachýs (Gr. βραχύς), short, and rhýnchos (Gr. ῥύγχος), snout, referring to its “broad and short” snout

Bathylychnops chilensis Parin, Belyanina & Evseenko 2009 –ensis, Latin suffix denoting place: near the coast of Chile in the southeastern Pacific, type locality

Bathylychnops exilis Cohen 1958 Latin for thin or slender, referring to its elongate, laterally compressed body

Dolichopteroides Parin, Belyanina & Evseenko 2009 –oides, Neo-Latin from eī́dos (Gr. εἶδος), form or shape: referring to previous placement of D. binocularis in Dolichopteryx

Dolichopteroides binocularis (Beebe 1932) bini (L.), two by two; ocularis (L.), of the eye, i.e., binocular (having two eyes), referring to its “telescope” eyes, which “rest in a great depression on the head, the upper part being covered with perfectly transparent tissue”

Dolichopteryx Brauer 1901 dolichós (Gr. δολιχός), long; pterýx (Gr. πτέρυξ), wing or fin, referring to very long pectoral and ventral fins of D. anascopa

Dolichopteryx anascopa Brauer 1901 aná (Gr. ἀνά), up; scopa, presumably borrowed from tēleskópos (Gr.τηλέσκοπος), i.e., upward-looking, referring to its tubular eyes, which protrude upwards and forwards

Dolichopteryx andriashevi Parin, Belyanina & Evseenko 2009 in memory of the “recently deceased outstanding” Russian ichthyologist Anatolii Petrovich Andriashev (1910–2009), who made a “large” contribution to the study of fishes of the World Ocean

Dolichopteryx longipes (Vaillant 1888) longus (L.), long; pes (L.), foot, referring to long ventral fins

Dolichopteryx nigripes Prokofiev 2020 niger (L.), dark or black; pes (L.), foot, referring to black pigmentation of ventral fins

Dolichopteryx parini Kobyliansky & Fedorov 2001 in honor of ichthyologist Nikolai Vasil’evich Parin (1932–2012), P. P. Shirov Institute of Oceanology, Russian Academy of Sciences

Dolichopteryx pseudolongipes Fukui, Kitagawa & Parin 2008 pseudo-, from pseúdēs (Gr. ψεύδης), false, i.e., although this species may superficially resemble D. longipes, such an appearance is false

Dolichopteryx rostrata Fukui & Kitagawa 2006 Latin for beaked, referring to its elongate snout

Dolichopteryx trunovi Parin 2005 in honor of Russian ichthyologist Ivan Andreevich Trunov (1936–2005), Atlantic Research Institute of Fisheries and Oceanography, who reported this species, based on insufficient material, as D. anascopa in 1997

Dolichopteryx vityazi Parin, Belyanina & Evseenko 2009 in honor of the “famous motor ship” R/V Vityaz (also spelled Vitiaz), from which the first author caught holotype on the ship’s 26th cruise 50 years ago

Duolentops Prokofiev 2020 duo (L.), two; lens (L.), lentil; ṓps (Gr. ὦψ), eye, referring to lenticular subscleral thickening under lens of eye

Duolentops minuscula (Fukui & Kitagawa 2006) Latin for rather small, referring to body size compared with congeners in Dolichopteryx (original genus)

Ioichthys Parin 2004 io-, named for the Institute of Oceanology, Russian Academy of Sciences (abbreviated IO), where Parin worked; ichthýs (Gr. ἰχθύς), fish

Ioichthys kashkini Parin 2004 in honor of Russian ichthyologist Nikita Ivanovich Kashkin, who took part in many expeditions on vessels of the Acoustics Institute of Oceanography in the 1960s through 1980s, significantly contributing to the ecological study of mesopelagic species, and who collected holotype of this species

Macropinna Chapman 1939 macro-, from makrós (Gr. μακρός), long or large; pinna (L.), fin, referring to large pectoral fins, with fine and long rays that reach middle of anal fin

Macropinna microstoma Chapman 1939 micro-, from mikrós (Gr. μικρός), small; stóma (Gr. στόμα), mouth, referring to its “extremely small gape, not reaching more than a third of the way to the eye”

Monacoa Whitley 1943 etymology not explained but almost certainly referring to the Principality of Monaco, where the research expedition that collected M. grimaldii had originated

Monacoa grimaldii (Zugmayer 1911) in honor of Albert Honoré Charles Grimaldi (1848–1922), Albert I, Prince of Monaco, who founded his principality’s Institut Océanographique, which published this fish’s description

Monacoa griseus Poulsen, Sado, Hahn, Byrkjedal, Moku & Miya 2016 Medieval Latin for gray, referring to uniform grayish anterior part of sole (reflecting organ), lacking distinct patterns of pigmentation

Monacoa niger Poulsen, Sado, Hahn, Byrkjedal, Moku & Miya 2016 Latin for dark or black, referring to black streak of pigmentation on sole (reflecting organ)

Opisthoproctus Vaillant 1888 ópisthen (Gr. ὄπισθεν), behind; prōktós (Gr. πρωκτός), anus, referring to posterior placement of anal fin, directly under caudal fin

Opisthoproctus soleatus Vaillant 1888 –atus (L.), provided with: solea (L.), sole, referring to elongate forward-projecting flattening on underside of abdomen (called a “sole reflecting organ”), serving as a reflector for a rectal bioluminescent light organ

Rhynchohyalus Barnard 1925 rhýnchos (Gr. ῥύγχος), snout; hyálinos (Gr. ὑάλινος), of crystal (here meaning transparent), referring to long, rounded and transparent snout of R. natalensis [replacement name for Hyalorhynchus Gilchrist & von Bonde 1924, preoccupied by Hyalorhynchus Ogilby 1910 in fishes]

Rhynchohyalus natalensis (Gilchrist & von Bonde 1924) –ensis, Latin suffix denoting place: type locality erroneously given as Natal, South Africa (correct type locality is off Table Bay, South Africa)

Rhynchohyalus parbevs Prokofiev & Kukuev 2020 a combination of the first letters (par+b+evs) of the last names of three Russian ichthyologists who collaborated on a 2009 revision of “long-body” barreleyes: Nikolai Vasil’evich Parin (1932–2012), Tat’yana Nikolaevna Belyanina and Sergei Afanas’evich Evseenko (1949–2020)

Winteria Brauer 1901 –ia (L. suffix), belonging to: Fritz Winter (1878–1917), scientific illustrator on the Valdivia Expedition (1888–1899) to subantarctic seas, who illustrated this species and many others

Winteria telescopa Brauer 1901 tēleskópos (Gr.τηλέσκοπος), far-seeing, referring to its massive, egg-shaped, forwardly directed eyes