View data on Catalog of Fishes here.
The barbel length is 79%–136% SL, apparently not changing with growth. All specimens have black pigment in the axis of the stem, this pigment usually becoming less dense in the distal end before the proximal bulb. The axis between bulbs is pigmented, but less densely than in most of the stem, and the filament axis may be moderately pigmented proximally or lack pigment. The external chevron–shaped or roundish striated areas on the stem are usually pigmented. The proximal and distal bulbs are usually ovoid in shape, occasionally spheroidal or oblatespheroidal. The proximal bulb does not appear to grow after about 100 mm SL, and the distal bulb only slightly. The proximal bulb thus decreases relative to SL from 1.0% to 0.6%, while the distal bulb is 0.7%–1.2%. The distal bulb is equal to or up to 1.6 times longer than the proximal. The distance between the bulbs apparently does not increase with growth and decreases relative to SL from 1.1%–1.9% SL in specimens 81–103 mm to 0.6%–1.0% in those 132–141 mm. The terminal filament is about 20% SL in the only 2 specimens (101 and 103 mm) in which it was intact. In all other specimens, both larger and smaller, the filament is less than 8% of SL, and breakage was confirmed in most. The filament lacks side branches of any size. Tiny bulblets are present along the filament axis, but they are usually very difficult to discern. The postorbital organ of large males (132–141 mm) is 1.6%–1.9% SL, 56%–66% of fleshy orbit length. There are no reports of colors in fresh specimens.
Two terminal bulbs separated by an interspace 0.6%–1.9% SL (0.6–2.0 times length of distal bulb). Barbel 79%–136% SL. Terminal filament long, about 20% SL, without side branches. Distal bulb 0.7%–1.2% SL, 1.0–1.6 times length of proximal bulb. Stem axis and external chevron–shaped or roundish striated areas usually darkly pigmented. Middorsal paired spots between occiput and dorsal-fin origin 8.
Known from off Oahu, Hawaiian Islands, and about 12°N, 150°W.
Gibbs RH, Jr, Clarke TA, Gomon JR. 1983. Taxonomy and distribution of the stomioid fish genus Eustomias (Melanostomiidae), I: Subgenus Nominostomias. Smithsonian Contributions to Zoology 380:1–139.
Eustomias bituberoides is a member of the subgenus Nominostomias Reagan and Trewavas (1930). The following description applies to all member of Nominostomias.
Three well-developed, free pectoral rays. Seven pelvic rays. Barbel with slender stem having little or no external pigment (axis often pigmented), no row of dark spots, and no branches proximal to the terminal bulbs (E. multifilis may have a few short filaments on the stem near the bulb). One or 2 relatively small terminal bulbs, the distalmost with a projection or filament of variable complexity (the projection almost indiscernible in a few species). No wide ventral body groove posterior to pectoral–fin base (a narrow, shallow groove observed in some specimens). Photophore and vertebral counts high. Photophores in ventral series (IC) 69–80 (seldom fewer than 72, species modes mostly 75–78), in lateral series (OC) 63–73 (seldom fewer than 66, species modes mostly 69–72), VAV and VAL 15–21 (seldom fewer than 16, species modes 17–18 and 18–19, respectively). Vertebrae in continuous series 64–71 (seldom fewer than 65, species modes mostly 67–69). No paired photophores in lateral series. Number of teeth high: premaxillary 11–20, mandibular 14–29 in large specimens (fewer in many specimens less than 100 mm SL).
Counts of fin-rays, photophores, vertebrae, and teeth are of little use in distinguishing most species of Nominostomias, for even those species that show modal differences overlap the ranges of most other species.
None of the body proportions examined by Gibbs et al. (1983) showed convincing differences among species of Nominostomias. Differences in size or relative–growth patterns appeared to characterize a number of species for which few specimens were measured, but these are believed to be artifacts of sampling. The cloud of points of species with abundant measurements usually encompassed those of species with few measurements, and in those abundant species, isometric growth is indicated for almost every body part once metamorphosis is complete. The only body measurement to indicate allometric growth is the least caudal-peduncle depth, which decreases relative to SL.
Gibbs RH, Jr, Clarke TA, Gomon JR. 1983. Taxonomy and distribution of the stomioid fish genus Eustomias (Melanostomiidae), I: Subgenus Nominostomias. Smithsonian Contributions to Zoology 380:1–139.
Regan CT, Trewavas E. 1930. The fishes of the families Stomiatidae and Malacosteidae. Danish Dana Expedition 1920−22 6:1−143.
To at least 141 mm SL.
Central North Pacific [west of Oahu Island, Hawaiian Islands], 21°30'N, 158°20'W, depth 0-1000 meters.
Holotype: USNM 223734.
Eustomias bituberoides és una espècie de peix de la família dels estòmids i de l'ordre dels estomiformes.
És un peix marí i d'aigües profundes que viu fins als 1.050 m de fondària.[3]
Es troba davant les costes d'Oahu (Hawaii).[5][3]
Eustomias bituberoides és una espècie de peix de la família dels estòmids i de l'ordre dels estomiformes.
Eustomias bituberoides es una especie de pez de la familia Stomiidae en el orden de los Stomiiformes.
• Los machos pueden llegar alcanzar los 14,1 cm de longitud total.[1][2]
Es un pez de mar y de aguas profundas que vive hasta 1.500 m de profundidad.
Se encuentra frente a las costas de Oahu (Hawái ).
Eustomias bituberoides es una especie de pez de la familia Stomiidae en el orden de los Stomiiformes.
Eustomias bituberoides Eustomias generoko animalia da. Arrainen barruko Stomiidae familian sailkatzen da.
Eustomias bituberoides is een straalvinnige vissensoort uit de familie van Stomiidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1983 door Gibbs, Clarke & Gomon.
Bronnen, noten en/of referenties
