Orange-lined Bullseye

description

Description. Dorsal-fin rays V, 11 (V, II; IV-V, 10 - 12, only once IV, rarely 10 or 12); anal-fin rays III, 28 (III, 28; I 1 I, 27 - 30); pectoral-fin rays 16 (16; 15 - 17, extremes uncommon); pelvic-fin rays 1,5; principal caudal-fin rays 9 + 8; upper procurrent rays 6,1 (6,1; 5 - 8,1 - 2); lower procurrent rays 4,1 (4,1; 3 - 5,1 - 2); lateralline scales 35 left, 36 right (35; 32 - 39, rarely the extremes); scale rows above lateral line 4; scale rows below lateral line 7 (7; 6 - 8); cheek scale rows 4 - 6 (based on only 6 specimens); predorsal scales 28 (28; 25 - 33); circumpeduncular scales 15 (15; 14 - 17, rarely the extremes); gill rakers 7 + 22 (7 + 21; 7 - 8 + 21 - 24, rarely 24); total gill rakers 29 (28 - 30 almost equally common; 28 - 32, once 32). As percentage of SL: head length 32.2 (32.0; 30.6 - 33.7); head depth 32.7 (33.1; 29.8 - 36.8); snout length 7.3 (7.0; 6.0 - 8.0); eye diameter 14.2 (14.5; 13.6 - 15.7); interorbital width 8.7 (8.2; 6.8 - 9.3); upper jaw length 18.9 (18.6; 17.2 - 20.0); predorsal length 42.0 (38.8; 34.6 - 42.9); prepelvic length 37.4 (39.9; 34.5 - 45.7); preana 1 length 57.0 (58.4; 54.9 - 64.3); pelvic-fin origin to anal-fin origin 22.8 (21.7;

Descriptions of two new species of the genus Pempheris (Pisces: Pempherididae) from Australia, with a provisional key to Australian species

diagnosis

Diagnosis. Pempheris ornata is unique among the Pempherididae in having: 6 - 7 yellow-orange or goldenbrown stripes on anterior part of body, reducing to three stripes on caudal peduncle (stripes become dark brown in preserved specimens), body cream-coloured or transparent; 32 - 39 lateral-line scales. Other features which, in combination, help to distinguish it from other members of the family are: all scales cycloid and deciduous; circumpeduncular scales 14 - 17; segmented anal-fin rays 27 - 30; dark, linear light organ visible through body wall between pelvic- and anal-fin origins with a slight bifurcation around the anus; anterior light organ an upwardly-curving mass of finger-like projections communicating posteriorly with pyloric caeca.

Descriptions of two new species of the genus Pempheris (Pisces: Pempherididae) from Australia, with a provisional key to Australian species

distribution

Distribution. Specimen localities are limited to areas along the southwest and south coast of Australia, from Rottnest Island (near Perth) to Rapid Bay Gust south of Adelaide) (Fig. 6). The species also has been reported north to Dongara (= Port Denison), Western Australia (Hutchins & Swainston, 1986; Hutchins, 1994). Biology. The species is reported as sometimes congregating beneath piers and near jetties and not often sighted during the day (Gomon, 1994). The deepest recorded collecting site is 30 m. This is the smallest member of the genus Pempheris, not known to exceed much more than 75 mm SL. The smallest gravid female measured 56 mm SL. The only geographic difference in meristics noted was a slightly lower total number of gill rakers on the first arch for the easternmost collections (Kangaroo Island, Rapid Bay) compared to western collections (Rottnest Island, Recherche Arch.) (modes of 28 vs. 30 - 31) (Table 1). However, more specimens are needed to establish whether or not these differences are significant. Etymology. The specific name comes from the Latin ornamentum, meaning ornamented or ornate, in reference to the spectacular coloration of this species compared to its co

Descriptions of two new species of the genus Pempheris (Pisces: Pempherididae) from Australia, with a provisional key to Australian species

materials_examined

Material examined. HOLOTYPE, AMS 1.33831 - 001, 7 l. 4 mm, South Australia, Rapid Bay (35 ° 31 ' 09 " S 138 ° 11 ' 05 " E), 9. l m, R. H. Kuiter, 21 March 1995. PARATYPES, 19 specimens, 52.7 - 75.5 mm, all collected with the holotype. AMS 1.33831 - 002, 63.2 mm; BMNH 1995.7.17: 1, 54.8 mm; MPM 31496, 2: 66.6 - 67.9 mm; NMV A 15835, 4: 53.2 - 75.5 mm; NTM S. 14104 - 001, 53.6 mm; ROM 69303, 68.2 mm; USNM 337545, 2: 51.1 - 75.1; WAM P. 30996 - 001, 2: 52.7 - 66.0. Other material: 20 specimens, 31.3 - 67.7 mm. AMS 1.20221 - 002, 58.5 mm, Western Australia, Recherche Arch., Mondrain Island (34 ° 08 ' S 122 ° 14 ' E), 30 m, B. C. Russell, 21 March 1978; AMS 1.20186 - 001, 2: 51.4 - 52.3 mm, South Australia, Kangaroo Island, Penneshaw (35 ° 44 ' S l 37 ° 58 ' E), 9 m, B. Russell and R. Kuiter, 12 March 1978; AMS 1.20247 - 0 l 3, 3: 3 l. l- 35.0 mm, Western Australia, Rottnest Island, Kingston Reefs (31 ° 59 ' S 115 ° 33 ' E), 8 m, B. C. Russell, 12 April 1978; WAM P. 27916 - 001, 2: 56.6 - 58.4 mm, Western Australia, Recherche Arch., Mondrain Island (34 ° 08 ' S 122 ° 14 ' E), 30 m, B. Russell, 21 March 1978; WAM P. 28300 - 014, 11: 50.7 - 67.7 mm, Western Australia, east side of Lucky B

Descriptions of two new species of the genus Pempheris (Pisces: Pempherididae) from Australia, with a provisional key to Australian species