Parascombrops glossodon Schwarzhans & Prokofiev 2017

Summary:

A small moderately deep-bodied ocean bass with a convex dorsal head profile, no longitudinal ridges on the preopercular lobe, a pale mouth, a dark gill cavity and a black peritoneum. Parascombrops glossodon also has a long patch of densely packed granular teeth on the tongue, a large, almost round patch of teeth on the vomer, and a bluntly pointed snout.

Cite this page as:

Bray, D.J. 2018, Parascombrops glossodon in Fishes of Australia, accessed 05 Oct 2024, https://fishesofaustralia.net.au/Home/species/5323

Parascombrops glossodon Schwarzhans & Prokofiev 2017

More Info

Distribution	Arafura Sea, Northern Territory, depth 156-197 m. Elsewhere the species occurs throughout the Western Pacific from the Philippines and the seas around Indonesia to Taiwan and northern Australia and westwards into the eastern Indian Ocean (Myanmar).
Features	Dorsal fin IX; I + 9; Anal fin II, 7; Pelvic fin I, 5; Pectoral fin 14–16; Gill rakers (developed) 16–20; pseudobranchial filaments 15–25, Pseudobranchial filaments broad 15–25, increasing with size; Lateral line scales about 22–29. Morphometrics (% of SL): orbit 12.2 (10.3–13.3); snout 10.5 (8.8–11.4); head length 40.6 (37.6–43.6); pectoral-fin length 24.7 (23.7–28.5); maximal body depth 27.7 (25.2–30.8); predorsal length 38.3 (37.2–43.1); prepelvic length 36.7 (34.2–39.9); preanal length 67.7 (62.8–69.9). Body moderately deep; head profile convex; snout bluntly pointed; interorbital space convex. Posterior edge of maxillary straight to weakly concave with postero-dorsal and postero-ventral angles rounded and postero-ventral angle not expanded; posterior margin of the maxillary vertical. Hind margin of lower part of subopercle and of interopercle moderately to weakly serrated, rarely almost smooth. Preopercular lobe without longitudinal ridges, but denticles of hind margin serration extending into crests onto preopercular lobe; inner edge of preopercle with 3–6 small denticles not extending along ventral branch. Proximal-middle radial of first anal fin pterygiophore very long, almost straight, with narrow hollow tip, reaching last pair of parapophyses. First haemal spine with narrow to moderate posterior expansion. Pelvic-fin spine serrated along its outer edge; all other fin spines smooth. Vomer broad, triangular, rounded posteriorly, with many granular teeth. Palatine and ectopterygoid with 2 to 4 rows granular teeth. Tongue with long central band of densely packed granular teeth.
Colour	In preservative: pale overall, numerous diffuse small dotted melanophores, strongly concentrated along margins of scale pocketson dorsal surface and sides of head, lower jaw and scale pockets on upper two-thirds of body; fins pale with numerous minute diffuse melanophores on both dorsal and caudal fins and base of pectoral fin, sometimes few sparse minute melanophores on anal fin. Some specimens with a small black mark on upper lip at level of anteroventral angle of lachrymal. Mouth pale, sometimes with narrow triangular patch of minute melanophores in front of vomer. Branchial cavity dark; peritoneum black.
Similar Species	Parascombrops glossodon differs from other species in the genus Parascombrops and all other acropomatids in having a long patch of densely packed granular teeth on the tongue, and a large, almost round teeth patch on the vomer. It is a small species with large eyes (orbit diameter 11.7–13.3% SL) and a bluntly pointed snout.
Etymology	The specific name is from the Greek glossa (= tongue) and odous (= teeth), in reference to the teeth on the tongue, the main diagnostic character.
Species Citation	Parascombrops glossodon Schwarzhans & Prokofiev 2017, Zootaxa 4260(1): 33, Figs. 7C, 8F, 9C, 12A, 12D, 13C, 14J-N, 18. Type locality: Philippines, Mindanao, Zamboango del Norte, Point Tagalo Light, 08°45'N, 123°33'E, depth 309 m.
Author	Bray, D.J. 2018

Parascombrops glossodon Schwarzhans & Prokofiev 2017

References

Schwarzhans, W.W. & Prokofiev, A.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). Zootaxa 4260 (1): DOI: 10.11646/zootaxa.4260.1.1