Nesogallica Sweeper

description

Description. Body strongly compressed, body width 6.2 – 8.7 in SL; body very deep, body depth 1.9 – 2.1 in SL; head length 3.2 – 3.5 in SL; snout very short, rounded, snout length 4.1 – 4.9 in HL; interorbital very narrow, 3.1 – 3.5 in HL; dorsal outline convex to dorsal fin base, extending somewhat linearly to caudal peduncle; ventral outline convex to anal fin base, extending somewhat linearly to caudal peduncle. Mouth large and strongly oblique, upper jaw length 1.9 in HL; the maxilla extending to anterior pupil or slightly beyond, but not reaching middle of pupil; maxilla broadly expanded posteriorly, its surface with level; lower jaw projecting beyond upper jaw; narrow band of villiform teeth in jaws. Scales ctenoid, thin, semicircular in shape, far wider than long, and deciduous; concealed small scales under surface scales; scales of ventral area larger than those of dorsal area; almost all parts of head scaled, except for just anterior to orbit; about one-third of basal part of anal fin covered with small scales; scales above lateral line more deciduous; pored lateral-line scales adherent, running parallel to dorsal outline to middle of caudal fin. Coloration when fresh. Bod

A review of the genus Pempheri s (Perciformes, Pempheridae) of the Red Sea, with description of a new species

diagnosis

Diagnosis. Pored lateral-line scales 52 – 59; scale rows above lateral line 5 1 / 2; circumpeduncular scales 16; no blackish spot on pectoral fin base; usually only the tip of dorsal fin blackish; chest usually keeled, but sometimes weakly or not at all; eye small, diameter 11.6 – 12.8 % SL, 39.4 – 42.3 % HL; body very deep 46.1 – 53.4 % SL.

A review of the genus Pempheri s (Perciformes, Pempheridae) of the Red Sea, with description of a new species

discussion

Remarks. Two syntypes were allocated to P. nesogallica Cuvier (MNHN A 222, MNHN B 2514). However, these two specimens are of two different species, and one of them (MNHN A 222) has the same characters as P. mangula. Thus, we select MNHN B 2514 as lectotype of P. nesogallica. Fricke et al. (2009) reported P. nesogallica from Réunion, and Mauritius. There are no specimen descriptions, and it is thus difficult to comment on the validity of this record. Randall (1995) reported P. vanicolensis from Oman, and gave two color photographs (Figs. 637 and 638). However, one photographed specimen (Fig. 637: BPBM 36341) had been reidentified as P. nesogallica in present study, and the other photo (Fig. 638) seems to be of an assemblage of P. tominagai, based on the blackish band at the anal fin base (see below).

A review of the genus Pempheri s (Perciformes, Pempheridae) of the Red Sea, with description of a new species

distribution

Distribution. Pempheris nesogallica is widely distributed in the Western Indian Ocean, but has only been collected from the southern part of the Red Sea. P. nesogallica P. nesogallica P. nesogallica Lectotype Non-types Paralectotype Number of Individuals 1 25 1 Standard length (mm) 130.3 89.6 – 116.8 138.6 As % of standard length Head length 30.0 28.5 – 31.2 (29.9) 30.9 Head depth 34.6 33.6 – 37.0 (35.7) 34.5 Snout length 6.2 6.3 – 7.3 (6.9) 6.5 Eye diameter 12.3 11.6 – 12.8 (12.3) 14.4 Interorbital width 8.5 8.4 – 10.1 (9.3) 8.6 Upper jaw length 15.4 15.0 – 16.5 (15.6) 16.5 Predorsal length 40.8 37.8 – 40.4 (39.4) 41.7 Prepelvic length 40.0 37.5 – 40.7 (39.3) 41.0 Preanal length 55.4 50.5 – 56.0 (53.7) 51.8 Body depth 46.9 46.1 – 53.4 (49.1) 44.6 Dorsal-fin length damaged 23.4 – 25.0 (24.0) 25.2 Anal-fin length damaged 14.3 damaged Pectoral-fin length 24.6 24.1 – 27.1 (25.5) 25.2 Pelvic-fin length 13.1 12.7 – 14.4 (13.6) damaged Dorsal-fin base 16.2 16.1 – 18.0 (17.2) 15.1 Anal-fin base 53.1 51.4 – 56.1 (53.7) 52.5 Caudal-peduncle length 9.2 8.1 – 10.2 (9.3) 10.1 Caudal-peduncle depth 8.5 8.9 – 10.2 (9.4) 7.9 Length of dorsal-fin origin to pelvic-fin origin 45.4 44.5 – 47.5 (46.0)

A review of the genus Pempheri s (Perciformes, Pempheridae) of the Red Sea, with description of a new species