Spearfin Bandfish

description

Description of Taiwanese specimens. Meristic and morphometric data are provided in Tables 3, 4. Dorsal-fin rays III, 21 (one specimen with 20); pectoral-fin rays 20 – 22 / 20 – 22; pelvic-fin rays I, 5 / I, 5; anal-fin rays I, 14; principal caudal-fin rays 8 + 7, uppermost and lowermost rays unbranched; procurrent caudal-fin rays 3 – 4 and 3 – 5 on upper and lower lobes, respectively. Gill rakers on outer face of first gill arch 15 – 17 + 28 – 31 = 43 – 48 (total); pseudobranchial filaments 24 – 43. Oblique body scale rows 39 – 56 / 39 – 59; cheek scale rows 4 – 6 / 4 – 6. Vertebrae 11 + 17 = 28 (n = 15); anal-fin pterygiophores anterior to 1 st haemal spine 2 (n = 15). Spines on preopercle 11 – 19 / 7 – 16. Premaxillary teeth 14 – 24 / 13 – 25; inner premaxillary teeth 0 – 1 / 0 – 1; lateral dentary teeth 12 – 19 / 12 – 18; symphyseal teeth 3 – 5 / 3 – 5; inner symphyseal teeth 0 – 6 / 0 – 6. Body stout, depth at anal-fin origin 3.5 – 3.9 in SL; both dorsal and ventral profiles of body straight, slightly tapering to caudal fin. Head large, length 2.9 – 3.7 in SL; anterior profile of head rounded, gently curved to dorsal-fin origin. Eyes large, eye diameter 1.9 – 2.8 in HL. Two nos

A new species of the bandfish genus Owstonia Tanaka, 1908 (Perciformes, Cepolidae) from Taiwan, northwestern Pacific Ocean, with new records and comments on morphological characters of congeners

description

Figs 2, 3, 4; Tables 3, 4 English name: Spear-finned Bandfish New Chinese name: 矛鰭歐氏鰧

A new species of the bandfish genus Owstonia Tanaka, 1908 (Perciformes, Cepolidae) from Taiwan, northwestern Pacific Ocean, with new records and comments on morphological characters of congeners

distribution

Distribution. Previously known only from the type series collected from northern Mindanao Island, Philippines at depth 320 m. Our specimens represent the northernmost record of this species. This species appears to be rather commonly collected by bottom trawl in southern Taiwan. The estimated depth of catch is about 200 – 400 m.

A new species of the bandfish genus Owstonia Tanaka, 1908 (Perciformes, Cepolidae) from Taiwan, northwestern Pacific Ocean, with new records and comments on morphological characters of congeners

description

Description. A species of Owstonia with LL pattern type 3, consisting of a lateral line that does not contact posttemporal sensory canal near anterodorsal margin of gill opening, but instead continues posteriorly just below dorsal-fin base and anteriorly beyond the dorsal-fin origin and makes a complete loop across nape; lateral line ends below dorsal-fin soft rays 15 (17), on right side only of lectotype and paralectotype respectively. Dorsal fin III, 21; anal fin I, 14; pectoral fin 21 ‒ 22; gill rakers 16 + 26 ‒ 28 = 42 – 44. Vertebrae: precaudal 11, caudal 17, total 28; analfin pterygiophores anterior to 1 st haemal spine 2. Oblique body scale rows in mid-lateral series about 45; nape scaly and cheek scale rows 5 ‒ 6 (Fig. 12 B). Lower limb margin of preopercle with about 12 − 14 very small, mostly skin-covered spines. Papillae in slight depression behind tip of premaxillary ascending processes 4, arranged in 2 almost equally spaced pairs, the posterior pair slightly larger (Fig. 13). Dentition of lectotype in poor condition, description applies only to paralectotype. Teeth in outer row of each premaxilla 16 / 18, with 6 ‒ 9 anterior teeth spike-like; no inner teeth anteriorly.

Hidden diversity in deep-water bandfishes: review of Owstonia with descriptions of twenty-one new species (Teleostei: Cepolidae: Owstoniinae)