NEMANTHIAS DISPAR - (HERRE, 1955)
Picture courtesy of: Alain Daoulas
Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Perciformes (Order) > Percoidei (Suborder) > Anthiadidae (Family) > Nemanthias (Genus)
Anthias à nageoires rouges, Fairy basslet, Orange anthias, Redfin anthias, Akane-hanagoi, アカネハナゴイ, 刺盖拟花鮨,
Synonymes
Anthias dispar (Herre, 1955)
Mirolabrichthys dispar (Herre, 1955)
Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Perciformes (Order) > Percoidei (Suborder) > Anthiadidae (Family) > Nemanthias (Genus)
Anthias à nageoires rouges, Fairy basslet, Orange anthias, Redfin anthias, Akane-hanagoi, アカネハナゴイ, 刺盖拟花鮨,
Synonymes
Anthias dispar (Herre, 1955)
Mirolabrichthys dispar (Herre, 1955)
Pseudanthias dispar (Herre, 1955)
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Description
Dorsal spines (total): 10; Dorsal soft rays (total): 16-18 (usually: 17); Anal spines: 3; Anal soft rays: 7-8 (rarely: 8); Pectoral fin rays 18-20 (rarely: 18); Lateral-line scales: 55-63; Circumpeduncular scales: 32-35; No auxiliary scales; Mandibles scaled; Side of snout (including region of nostrils) naked; A row of small slender canine teeth along sides of jaws, angled forward (except those anteriorly which are vertical); Villiform teeth in a few rows anteriorly in jaws, absent along side of lower jaw but present as a single inner row on side of upper jaw; Gill rakers: 9-12 + 22-26; One predorsal bone; No papillae on edge of orbit; Two opercular spines; Snout not very long: 3.1-4.2 in head; Depth of body: 2.7-3.2 in SL; Soft dorsal and anal fins scaled only basally; Origin of dorsal fin slightly anterior to upper end of gill opening; First dorsal spine short; Second dorsal spine the longest, but not prolonged; second pelvic ray slightly prolonged in females, very elongate in males, reaching beyond base of anal fin; No dorsal or anal soft rays prolonged; Caudal lobes slightly produced, more so in males than females; Preopercular serrae: 7-16. Max. length: 9.5 cm TL. Depth range: 1 - 18 m.
Color
Etymology
Nemanthias: from Latin, nema = thread. Referring to first two dorsal-fin spines, which are filiform. + from Greek, anthias = a name of an unknow fish given by Aristotle in "History of Animals". This book, written in the fourth century BC, is one of the major texts on biology by the ancient Greek philosopher Aristotle (384–322 BC), who had studied at Plato's Academy in Athens.
dispar: from Latin, dispar = unlike, dissimilar, different, unequal. Differing from Mirolabrichthys tuka (its presumed congener at the time) in its greater number of lateral-line scales, more numerous dorsal and pectoral rays, much lower soft dorsal fin (which does not exceed spinous dorsal fin in height), and number of gill rakers.
Original description: Mirolabrichthys dispar Herre, 1955 - Type locality: Gizo Island, Solomon Islands.
Distribution
Eastern Indian Ocean, western Pacific: Christmas Island (Indian Ocean) east to Line Islands, Fiji and Samoa, north to southern Japan, south to northern Australia and New Caledonia.
Biology
Found at the upper-edge of steep outer reef slopes, with moderate currents. Occurs in large aggregations, of mixed sexes when feeding in currents sweeping the reef.
Similar species
Nemanthias ignitus (Randall & Lubbock, 1981) - Reported from Indian Ocean: Maldives east to Sumatra (Indonesia).
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Description
Dorsal spines (total): 10; Dorsal soft rays (total): 16-18 (usually: 17); Anal spines: 3; Anal soft rays: 7-8 (rarely: 8); Pectoral fin rays 18-20 (rarely: 18); Lateral-line scales: 55-63; Circumpeduncular scales: 32-35; No auxiliary scales; Mandibles scaled; Side of snout (including region of nostrils) naked; A row of small slender canine teeth along sides of jaws, angled forward (except those anteriorly which are vertical); Villiform teeth in a few rows anteriorly in jaws, absent along side of lower jaw but present as a single inner row on side of upper jaw; Gill rakers: 9-12 + 22-26; One predorsal bone; No papillae on edge of orbit; Two opercular spines; Snout not very long: 3.1-4.2 in head; Depth of body: 2.7-3.2 in SL; Soft dorsal and anal fins scaled only basally; Origin of dorsal fin slightly anterior to upper end of gill opening; First dorsal spine short; Second dorsal spine the longest, but not prolonged; second pelvic ray slightly prolonged in females, very elongate in males, reaching beyond base of anal fin; No dorsal or anal soft rays prolonged; Caudal lobes slightly produced, more so in males than females; Preopercular serrae: 7-16. Max. length: 9.5 cm TL. Depth range: 1 - 18 m.
Color
Color of females in life: yellow-orange dorsally shading to whitish ventrally with a tinge of lavender; A horizontal orange band on snout continuing faintly from lower eye toward pectoral base; Dorsal fin red (more intensely anteriorly) with a narrow lavender margin; Caudal fin yellow, becoming orange red on posterior margin and tips of lobes; Remaining fins whitish with lavender tinge.
Color of males in life: upper head and anterior body to a diagonal at about base of third dorsal spine heliotrope; Back posterior to this demarcation yellow, shading to lavender on caudal peduncle; Lower half of head and body lavender; An orange band from snout tip to eye and an orange-yellow band from lower eye to edge of operculum at level of upper pectoral base; Dorsal fin red (deep red anteriorly) with a lavender margin and a violet line at base (more evident on soft portion of fin); Caudal fin orange-red, shading distally to pink, the upper and lower margins and tips of caudal lobes lavender; Remaining fins pale lavender.
Etymology
Nemanthias: from Latin, nema = thread. Referring to first two dorsal-fin spines, which are filiform. + from Greek, anthias = a name of an unknow fish given by Aristotle in "History of Animals". This book, written in the fourth century BC, is one of the major texts on biology by the ancient Greek philosopher Aristotle (384–322 BC), who had studied at Plato's Academy in Athens.
dispar: from Latin, dispar = unlike, dissimilar, different, unequal. Differing from Mirolabrichthys tuka (its presumed congener at the time) in its greater number of lateral-line scales, more numerous dorsal and pectoral rays, much lower soft dorsal fin (which does not exceed spinous dorsal fin in height), and number of gill rakers.
Original description: Mirolabrichthys dispar Herre, 1955 - Type locality: Gizo Island, Solomon Islands.
Distribution
Eastern Indian Ocean, western Pacific: Christmas Island (Indian Ocean) east to Line Islands, Fiji and Samoa, north to southern Japan, south to northern Australia and New Caledonia.
Biology
Found at the upper-edge of steep outer reef slopes, with moderate currents. Occurs in large aggregations, of mixed sexes when feeding in currents sweeping the reef.
Similar species
Nemanthias ignitus (Randall & Lubbock, 1981) - Reported from Indian Ocean: Maldives east to Sumatra (Indonesia).
Last update: 2, september 2022