Linophryne brevibarbata Beebe 1932

View data on Catalog of Fishes here.

Holotype in an advanced stage of metamorphosis, with black skin, adult tooth pattern in development, and tiny, papilliform posterior and distal escal appendages; barbel of holotype small, about 12% SL in greatest length, three primary branches and enlarged secondary branches all present; secondary branches simple, each primary branch bearing a series of 6 or 7 papilliform side-branches. Body proportions, spines of sphenotics, preopercle, and lower jaw, pattern of jaw teeth, coloration and other characters as for most or all species of the genus.

Metamorphosed females without frontal spines, a single pair of vomerine teeth, longest teeth in lower jaw 9–18% SL; dorsal-fin rays 3, anal-fin rays 3, pectoral-fin rays 16 or 17. All four metamorphosed females very similar: length of illicium 17–22% SL; distal escal appendage about 6% SL, with 3–5 pairs of short, pointed side-branches; posterior escal appendage short, more or less compressed, and pointed; greatest length of barbel 85–115% SL; primary branches bearing a number of side-branches; enlarged, proximal, secondary branches varying without apparent relation to size of specimens; one or two short filaments present on tips of side-branches of smallest specimens.

Subdermal pigment of body in two lateral rows of well-separated melanophores (examined in metamorphic and other juvenile females, and in one parasitic male). Parasitic males with blunt sphenotics, without spine. Sexual maturity: Both sexually parasitized females are immature with egg diameters of less than 0.1 mm.

Females distinct from those of other species of the genus in the following escal and barbel characters: distal escal appendage less than 10% SL in all specimens (including adult 85–100 mm), with 3–5 pairs of side-branches, the proximal pair pointed and not significantly enlarged; a short posterior escal appendage present; no other escal appendages. Barbel divided nearly at base into three unpaired primary branches; the anterior primary branch with a pair of enlarged secondary branches near base and a single, posterior, enlarged, secondary branch proximal to these; each of the paired secondary branches simple or with side-branches less than half their length; the intermediary primary branch with a single, anterior, enlarged, secondary branch; the posterior primary branch without significantly enlarged, secondary branches; each primary branch and most or all enlarged, secondary branches with a series of simple side-branches decreasing in length; each with a small number of photophores embedded in tip; filaments absent or few and small; primary branches nearly equal in length, 70–100% SL. Subdermal pigment in two bands on side of body. Males without pointed sphenotic spines.

The records of L. brevibarbata are located across the North Atlantic between approximately 32° and 45°N; the holotype from off Bermuda, the four metamorphosed females east of 40°W.

Meso- to bathypelagic. Except for one of the adult females, found in the stomach of Aphanopus carbo, the specimens were caught in open pelagic nets with maximum fishing depths between 600 and 2000 m.

Pietsch TW. 2009. Oceanic Anglerfishes: Extraordinary Diversity in the Deep Sea. Berkley: University of California Press. 638 p.

Parasitized females have a single attached male, in contrast to the linophrynid genera Haplophryne and Borophryne (and the ceratiid genera Ceratias and Cryptopsaras) in which females with two or more males are known. In all known cases parasitized females of the family, the male is directed forward with respect to the female and attached in nearly the same position on the ventral midline of the female, somewhat in front of and below the sinistral anus; with only one or two exceptions, all are attached upside down with respect to the female. This is again in contrast to the linophrynid genera Haplophryne and Photocorynus (and the ceratiid genus Cryptopsaras) in which males may attach in any direction and almost anywhere on the head and body of the female. In all known examples, the males are attached by both upper and lower jaws, leaving prominent openings on each side that lead into their mouths and opercular cavities; there is no papilla of tissue projecting from the female into the mouth of the male.

Know from six metamorphosed females (33–100 mm), the two largest (86 and 100 mm) with parasitic males (13.6 and 18.5 mm).

Nine miles southeast of Nonsuch Island, Bermuda, 32°12'N, 64°36'W, depth 0 to 900 fathoms.

Holotype of Linophryne brevibarbata: USNM 170947.

Females distinguished by the following characteristics: distal escal appendage less than 10% SL; short posterior ascal appendage present; barbel divided nearly at base into 3 unpaired primary branches; subdermal pigment in two bands on side of body; males without pointed sphenotic spines (Ref. 86949).

Dorsal soft rays (total): 3; Analsoft rays: 3

Parasitic males.

fisheries: of no interest

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Linophryne brevibarbata Linophryne generoko animalia da. Arrainen barruko Linophrynidae familian sailkatzen da.

短髭樹鬚魚為輻鰭魚綱鮟鱇目棘茄魚亞目鬚角鮟鱇科的其中一種，發現於北大西洋區，從百慕達群島至亞速群島海域，屬深海魚類，棲息深度可達1647公尺，屬肉食性，雄魚寄生在雌魚身上。