TRIMMA EMERYI - (WINTERBOTTOM, 1985)
Picture courtesy of: Alain Daoulas
Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Gobiiformes (Order) > Gobioidei (Suborder) > Gobiidae (Family) > Gobiinae (Subfamily) > Trimma (Genus)
Gobie pygmée d'Emery, Emery's Pygmygoby, Emery's goby, Emery's pygmy goby, Emery's dwarfgoby, Urokobenihaze, ウロコベニハゼ, 埃氏磨塘鱧,
Description
Dorsal spines (total): 6-7; Dorsal soft rays (total): 8, second spine longest but not elongated, reaching to base of first dorsal-fin ray when adpressed, but may reach base of fourth ray in mature males, first ray and anterior element of last ray unbranched; Anal spines: 1; Anal soft rays: 7-8 (usually: 8), first ray and anterior element of last ray unbranched; Pectoral fin rays: 16–18, all rays unbranched, reaching posteriorly to a point above anus or anterior few elements of anal fin; Pelvics fins rays: I 5, fifth ray branched once dichotomously and subequal to fourth, which reaches posteriorly to between anus and anterior few elements of anal fin, other rays branched once sequentially, no fraenum, full basal membrane; Longitudinal scale series: 24-25; Median predorsal scales: 7-8; Depth of body: 4.6 in SL. Lateral line scales: 23; Predorsal scales: 6–8, first predorsal scale up to twice as large as others, scales reaching anteriorly to a vertical in line with posterior margin of eye; Transverse scales: 6–6.5; Cycloid scales may be present on opercle; Pectoral-fin base margined by a vertical row of two large cycloid scales; Scales on breast anterior midline of belly cycloid; Those posteriorly on belly may be cycloid or ctenoid; Other scales ctenoid. Teeth in outer row of both jaws consist of enlarged, curved, evenly spaced canines followed by several irregular rows of small conical teeth; Inner row of lower jaw intermediate in size. Tongue truncate with rounded edges, almost pupil diameter in width. Gill opening extending anteroventrally to a vertical between middle and anterior of pupil, outer gill rakers on first gill arch: 2–3 + 11–13. Anterior nares in a short tube, posterior pore-like with a raised rim, nasal sac slightly elevated, rather small and confined to posterior two-thirds of anterior half of snout. Interorbital trough moderate, grading to shallow or absent posterodorsal to eye, bony interorbital width equal or less than half pupil-diameter; Epaxialis musculature reaching to a vertical in line with posterior margin of eye. Max. length: 2.4 cm SL. Depth range: 6 - 48 m.
Color
Body translucent, liberally sprinkled with brown chromatophores, scale pockets strongly outlined with dark chromatophores and melanophores, a light yellow suffusion on head and lower half of body, chromatophores evenly distributed on cheek and snout, median fins yellowish with numerous brown chromatophores, paired fins light yellow, iris with an inner red ring grading irregularly to yellow mixed with brown chromatophores at periphery.
Etymology
Trimma: from Greek, trimma, -atos = something crushed.
emeryi: named for Alan Roy Emery, colleague, field companion and friend of Richard Winterbottom, in appreciation of his many contributions to science, administration and fieldwork.
Original description: Trimma emeryi Winterbottom, 1985 - Type locality: Salomon Atoll, Chagos Archipelago, [Indian Ocean, ca. 5°20'S 72°16'E], depth 20-25 meters.
Distribution
Indo-West Pacific: Amirantes and Comoros east to Samoa, north to Ryukyu Islands, south to northern Australia, New Caledonia, Marshall Islands, Fiji, Samoa and Tonga.
Biology
Occurs in outer reef slopes.
An analysis of the CO1 genome of eight specimens from six localities revealed six groups differing from each other by between 14–22%, suggesting the presence of cryptic species. Further studies of this species are clearly needed to resolve the variation encountered.
Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Gobiiformes (Order) > Gobioidei (Suborder) > Gobiidae (Family) > Gobiinae (Subfamily) > Trimma (Genus)
Gobie pygmée d'Emery, Emery's Pygmygoby, Emery's goby, Emery's pygmy goby, Emery's dwarfgoby, Urokobenihaze, ウロコベニハゼ, 埃氏磨塘鱧,
Description
Dorsal spines (total): 6-7; Dorsal soft rays (total): 8, second spine longest but not elongated, reaching to base of first dorsal-fin ray when adpressed, but may reach base of fourth ray in mature males, first ray and anterior element of last ray unbranched; Anal spines: 1; Anal soft rays: 7-8 (usually: 8), first ray and anterior element of last ray unbranched; Pectoral fin rays: 16–18, all rays unbranched, reaching posteriorly to a point above anus or anterior few elements of anal fin; Pelvics fins rays: I 5, fifth ray branched once dichotomously and subequal to fourth, which reaches posteriorly to between anus and anterior few elements of anal fin, other rays branched once sequentially, no fraenum, full basal membrane; Longitudinal scale series: 24-25; Median predorsal scales: 7-8; Depth of body: 4.6 in SL. Lateral line scales: 23; Predorsal scales: 6–8, first predorsal scale up to twice as large as others, scales reaching anteriorly to a vertical in line with posterior margin of eye; Transverse scales: 6–6.5; Cycloid scales may be present on opercle; Pectoral-fin base margined by a vertical row of two large cycloid scales; Scales on breast anterior midline of belly cycloid; Those posteriorly on belly may be cycloid or ctenoid; Other scales ctenoid. Teeth in outer row of both jaws consist of enlarged, curved, evenly spaced canines followed by several irregular rows of small conical teeth; Inner row of lower jaw intermediate in size. Tongue truncate with rounded edges, almost pupil diameter in width. Gill opening extending anteroventrally to a vertical between middle and anterior of pupil, outer gill rakers on first gill arch: 2–3 + 11–13. Anterior nares in a short tube, posterior pore-like with a raised rim, nasal sac slightly elevated, rather small and confined to posterior two-thirds of anterior half of snout. Interorbital trough moderate, grading to shallow or absent posterodorsal to eye, bony interorbital width equal or less than half pupil-diameter; Epaxialis musculature reaching to a vertical in line with posterior margin of eye. Max. length: 2.4 cm SL. Depth range: 6 - 48 m.
Color
Body translucent, liberally sprinkled with brown chromatophores, scale pockets strongly outlined with dark chromatophores and melanophores, a light yellow suffusion on head and lower half of body, chromatophores evenly distributed on cheek and snout, median fins yellowish with numerous brown chromatophores, paired fins light yellow, iris with an inner red ring grading irregularly to yellow mixed with brown chromatophores at periphery.
Etymology
Trimma: from Greek, trimma, -atos = something crushed.
emeryi: named for Alan Roy Emery, colleague, field companion and friend of Richard Winterbottom, in appreciation of his many contributions to science, administration and fieldwork.
Original description: Trimma emeryi Winterbottom, 1985 - Type locality: Salomon Atoll, Chagos Archipelago, [Indian Ocean, ca. 5°20'S 72°16'E], depth 20-25 meters.
Distribution
Indo-West Pacific: Amirantes and Comoros east to Samoa, north to Ryukyu Islands, south to northern Australia, New Caledonia, Marshall Islands, Fiji, Samoa and Tonga.
Biology
Occurs in outer reef slopes.
An analysis of the CO1 genome of eight specimens from six localities revealed six groups differing from each other by between 14–22%, suggesting the presence of cryptic species. Further studies of this species are clearly needed to resolve the variation encountered.