198 
A.C. GILL AND R. FRICKE 

Fig. 6 Distributional records for Anisochromis kenyae (@), A. mascarenensis (@) and A. straussi (A). 
with dead and live corals, 3-4 m, P.C. Heemstra, A.C. Gill, M. 
Smale, W. Holleman, P. Clark and B. Galil, 16 May 1995 (field 
number PCH 95-M28). 
DIAGNOSIS 
The following characters distinguish A. mascarenensis from conge- 
ners: dorsal-fin rays 1,25—26, usually 1,26; anal-fin rays I,17-18, 
usually 1,18; caudal vertebrae 23-24, usually 24; scales in lateral 
series 40-45, usually 42-44; posterior interorbital pores 34; total 
parietal pores 23-44, usually more than 30; dorsal fin of male 
specimens pale in preservative, with conspicuous, large dark spot 
distally on anterior part of fin. 
DESCRIPTION (Based on 11 specimens, 13.3—25.5 mm SL) 
Dorsal-fin rays I,25—26 (1,26), all segmented rays branched; anal-fin 
rays 1,17—18 (1,18), all segmented rays branched; pectoral-fin rays 
13—14 (13/14), upper | and lower 0-1 (0/1) rays simple; pelvic-fin 
rays 1,4, medial ray small, inconspicuous and unbranched, all other 
segmented rays branched; upper procurrent caudal-fin rays 5; lower 
procurrent caudal-fin rays 4—5 (4); principal caudal-fin rays 8 + 8, 
upper 0-1 (0) and lower 0-1 (0) unbranched; total caudal-fin rays 
25—26 (25); scales in lateral series 40-45 (43/43); anterior lateral- 
line scales 32—39 (35/35); anterior lateral line terminating beneath 
segmented dorsal-fin ray 19-23 (21/21); predorsal scales 5—6 (5); 
scales in transverse series 10-12 + 1 + 2-3 = 13-16 (11 +1 + 2/11 
+ 1 +2); circumpeduncular scales 12; gill rakers 1-2 + 2, sometimes 
with 1—2 tiny rudiments (inconspicuous ossifications bearing a few 
or no teeth) above and below rakers (gill raker count not determined 
in holotype); pseudobranch filaments 6-7 (not determined in 
holotype). 
Cephalic laterosensory pores (all bilaterally paired, unless 
otherwise stated; Fig. 1): nasal pores 1—3 (3/3); anterior interorbital 
pores 2-3 (2/2); posterior interorbital pores (unpaired) 3-4 (3); 
supraotic pores 2—6 (5/6); suborbital pores 8-13 (10/10); posterior 
otic pores 4-10 (6/5); preopercular pores 12-18 (13/15); dentary 
pores 3-4 (4/4); intertemporal pores 1—2 (1/1); anterior temporal 
pores 1—2 (1/1); posttemporal pores 1—2 (1/1); total parietal pores 
23-44 (35). 
As percentage of standard length (based on nine specimens, 19.6— 
25.5 mm SL): body depth at dorsal-fin origin 18.7—20.8 (19.2); 
greatest body depth 18.7—20.8 (19.2); head width 11.5—13.3 (11.7); 
head length 25.2-—27.4 (25.9); snout length 4.5—5.6 (5.0); orbit 
diameter 6.7—-8.7 (7.1); interorbital width 3.3-4.1 (3.3); upper jaw 
