Parascombrops analis Katayama 1957
Creators: name: Schwarzhans, Werner W.
name: Prokofiev, Artem M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Acropomatidae
Parascombrops
Parascombrops analis

description: Parascombrops analis (Katayama, 1957)
Figs. 6H, 7A, 9A, 11B, 13A, 14F–G, 16, 35, Tables 2–7
Neoscombrops analis Katayama 1957: 153, fig. 1 (holotype: NSMT [ex Katayama Fish Coll. 2447]; type-location off Owase, Mie Prefecture, Japan).
Synagrops analis: Mochizuki 1984: 125; Hatooka 2002: 686; Fricke et al. 2014: 57.
Material examined (18 specimens). AMS I.20919-038, 2 specimens, 91–107.5 mm SL, off Queensland, Australia, 11°58’S, 144°07’E, 400–420 m; ASIZP 72163, 2 specimens, 62–82 mm SL, Dong-gang, southwestern Taiwan; BSKU 50683, 70 mm SL, BSKU 73676, 51 mm SL, BSKU 94342, 74.5 mm SL, BSKU 94343, 74.5 mm SL, BSKU 94426, 63.5 mm SL, BSKU 94525, 82.5 mm SL, BSKU 101383, 29 mm SL, all Mimase fish market, Kochi, Japan; MNHN 1998-1056, 3 specimens, 77–82 mm SL, off Vanuatu, 16°52’S, 168°10’E, 486–494 m; MNHN 2011-0160, 43 mm SL, off Vanuatu, 15°52’S, 167°27’E, 944–956 m; NSMT P59841, 2 specimens, 72.5 and 74 mm SL, Mimase fish market, Kochi, Japan; NSMT P65718, 76.5 mm SL, off Honshu, Japan, 36°N, 148°E, 148– 167 m.
Diagnosis. Deep-bodied species with convex dorsal head profile. Anal fin III + 6 in specimens> 65 mm SL. Pectoral fin with 16–18 rays, pectoral length 21.5–27% SL. Gill rakers 15–18. Pseudobranchial filaments 16–23, increasing with size. First anal-fin pterygiophore long, slightly forward bent, with very broad tip and hollow. Ectopterygoid with single row of denticles. Orbit diameter 11.7–13.3% SL. Otolith compressed (OL:OH = 1.45–1.55).
Description. Counts and measurements are summarized in Tables 2–7. Snout rounded; interorbital space strongly convex. Posterior edge of maxillary more or less concave with postero-dorsal and postero-ventral angles sharp and postero-ventral angle somewhat extended downward, but positioned on the same level with posterodorsal angle resulting in an almost vertical posterior rim of the maxillary. Preopercular lobe without longitudinal ridges, but denticles of hind margin serration extending onto preopercular lobe; inner edge of preopercle with 2–5 long denticles not extending along ventral branch. Three anal-fin spines, second and third spines almost equal in length, but third spine always less stiff than second; in specimens <65 mm SL the third spine sometimes not completely ossified, weak or transitional from soft ray to spine and then not counted as spine. First anal fin pterygiophore long, curved, broadened at tip, hollow, reaching last pair of pleural ribs. First haemal spine with a narrow posterior expansion. Pelvic-fin spine serrated along its outer edge; all other fin spines smooth. About 28 scales along lateral line.
Dentition. Premaxillary with a pair of canines near symphysis, followed posteriorly by a wide band of tiny conical teeth. Dentary with a pair of canines and a band of minute conical teeth near symphysis, followed posteriorly by a row of several small conical teeth and three to four enlarged canine-like teeth on each side. Vomer with a triangular to V-shaped patch of small conical teeth, usually with one row of longer teeth at rear margin. Palatines with one row of sharp conical teeth anteriorly and two rows of granular teeth posteriorly; ectopterygoid with single row of denticles. Tongue toothless.
Otolith morphology (n = 7). Otolith compressed, thin; OL:OH = 1.45–1.55; OL:OT about 5–6. Dorsal rim moderately high, broad, rounded pre- and postdorsal angles of nearly equal height, postdorsal angle shifted far backwards. Ventral deep, regularly curved, deepest anterior of the middle. Anterior tip with massive, somewhat pointed rostrum; weak antirostrum and excisura. Posterior rim broadly rounded, its tip located slightly below tip of cauda. Rims smooth or slightly undulating. Inner face slightly convex with shallow, slightly supramedian sulcus. Ostium shallow, about twice as wide as cauda, oval in shape, with distinct colliculum, tip of rostrum being positioned above mid-level. Cauda slightly deepened, narrow, almost straight with very slightly swung, rounded tip. CaL:OsL = 1.1–1.2. Dorsal depression shallow, large, well marked above crista superior. Ventral furrow moderately distinct, anteriorly very close to anterior rim of otolith, posteriorly slightly turned upward from ventral otolith rim and terminating close to tip of cauda. Outer face slightly concave, smooth with few weak radial furrows near ventral rim.
Size. Attain about 110 mm SL.
Discussion. This species can be distinguished from all other species of Parascombrops by the presence of three (vs two) anal-fin spines (specimens> 65 mm SL). The development of the third anal-fin spine is a secondary transformation of the first soft ray with growth, as demonstrated by the reduced number of soft rays in adults (6). It also has the deepest body (27.9–33.8% SL) of all species, and a distinctly convex dorsal head profile together with P. madagascariensis n. sp. and P. yamanouei n. sp. Parascombrops analis can be distinguished from both species by the vomerine tooth patch which is wider and more intensely covered by granular teeth, by a single row of denticles on the ectopterygoid (vs 2–4), and the first anal-fin pterygiophore being very broad, with a widened tipped and hollow (vs moderately broad, without widened tip and hollow).
Geographic and bathymetric distribution. Parascombrops analis has a disjunctive distribution in the northwestern Pacific off southern Japan, Taiwan and the northern Philippines and in the southwestern Pacific from the Coral Sea to Vanuatu, but is absent from the tropical low latitudes. Specimens examined have been caught in a wide depth range between 148 and 956 m.
description: Published as part of Schwarzhans, Werner W. & Prokofiev, Artem M., 2017, Reappraisal of Synagrops Günther, 1887 with rehabilitation and revision of Parascombrops Alcock, 1889 including description of seven new species and two new genera (Perciformes: Acropomatidae), pp. 1-74 in Zootaxa 4260 (1) on pages 27-31, DOI: 10.5281/zenodo.571305