Naso tergus

Taxonavigation

Taxonavigation: Acanthuroidei
Superregnum: Eukaryota Cladus: Unikonta Cladus: Opisthokonta Cladus: Holozoa Regnum: Animalia Subregnum: Eumetazoa Cladus: Bilateria Cladus: Nephrozoa Superphylum: Deuterostomia Phylum: Chordata Subphylum: Vertebrata Infraphylum: Gnathostomata Megaclassis: Osteichthyes Superclassis/Classis: Actinopterygii Classis/Subclassis: Actinopteri Subclassis/Infraclassis: Neopterygii Infraclassis: Teleostei Megacohors: Osteoglossocephalai Supercohors: Clupeocephala Cohors: Euteleosteomorpha Subcohors: Neoteleostei Infracohors: Eurypterygia Sectio: Ctenosquamata Subsectio: Acanthomorphata Divisio/Superordo: Acanthopterygii Subdivisio: Percomorphaceae Series: Eupercaria Ordo: Acanthuriformes Subordo: Acanthuroidei

Familia: Acanthuridae
Genus: Naso
Species: Naso tergus

Holotype: NMMB-P10808. Paratypes: NMMB-P2373 (1), 10480 (1), 10809 (1), 10810 (1), 10811 (1), 10812 (1), 10813 (1), 10814 (1), 10815 (1), 10816 (1), 10817 (1); QM I.38837 (1).

Diagnosis. A species of Naso differs from congeners in having VI dorsal-fi n spines; an acute head, without rostral projection or tuberosity in adults; two bony plates of caudal peduncle; a relatively large eye (6.3–7.2% SL); a median body depth, 2.8–2.9 in SL; 100–120 teeth on upper jaw and 90–110 on lower jaw; a uniformly brownish body coloration; a relatively small adult size which might not exceed 350 mm SL; and a different genome structure.

Distribution. Known from the type series, collected from off northeastern and southern Taiwan by bottom gill-net and hook and line at depths between 70 and 80 meters.

Etymology. The species name, tergus, meaning ‘to hide’, refers to the typical appearance of this species that makes it resemble subadults of many other Naso species.

Ho, H.-C. , K.-N. Shen & C.-W. Chang 2011: A new species of the unicornfish genus Naso (Teleostei: Acanthuridae) from Taiwan, with comments on its phylogenetic relationship. The Raffles Bulletin of Zoology, 59(2): 205–211. [1]