Tab. 1. Descriptive morphometrics of Eurycheilichthys species. Values are given as percents of standard length or of head length. Hol = holotype. SD = standard deviation. Data in bold are distinguishing features among species.
| Character |
E. pantherinus n=23 |
E. limulus n=26 |
E. apocremnus n=18 |
E. castaneus n=25 |
E. coryphaenus n=10 |
| Low |
High |
Mean |
Low |
High |
Mean |
Hol |
Low |
High |
Mean |
Hol |
Low |
High |
Mean |
Hol |
Low |
High |
Mean |
| Standard length (mm) |
33.0 |
48.1 |
42.6 |
41.3 |
50.4 |
45.8 |
47.0 |
38.1 |
54.1 |
45.5 |
48.1 |
37.2 |
49.6 |
44.0 |
46.7 |
36.2 |
49.7 |
41.2 |
| Percents of SL |
| Head length |
30.6 |
37.6 |
35.1 |
30.4 |
34.7 |
32.4 |
35.8 |
32.9 |
36.6 |
34.6 |
32.9 |
31.2 |
35.3 |
32.9 |
33.3 |
31.5 |
35.8 |
34.4 |
| Predorsal length |
43.5 |
49.4 |
45.6 |
42.9 |
47.6 |
45.3 |
45.0 |
40.8 |
47.0 |
44.3 |
42.9 |
40.6 |
47.4 |
43.4 |
44.1 |
41.0 |
45.0 |
43.7 |
| Dorsal-fin spine length |
19.9 |
24.5 |
22.2 |
18.3 |
23.5 |
20.4 |
23.7 |
21.1 |
24.6 |
23.2 |
21.4 |
19.8 |
23.8 |
21.8 |
21.8 |
21.8 |
24.0 |
23.0 |
| First anal-fin ray length |
14.9 |
19.0 |
17.3 |
16.1 |
22.3 |
18.3 |
20.3 |
18.3 |
22.1 |
20.7 |
19.9 |
17.6 |
22.1 |
19.8 |
18.0 |
16.7 |
19.3 |
18.0 |
| Pectoral-fin spine length |
21.8 |
27.4 |
24.1 |
19.8 |
24.7 |
22.4 |
23.6 |
21.6 |
26.1 |
24.2 |
22.4 |
20.9 |
25.5 |
23.2 |
26.2 |
24.1 |
27.4 |
26.2 |
| First pelvic-fin ray length |
16.4 |
20.8 |
18.7 |
13.0 |
21.4 |
16.9 |
21.7 |
20.4 |
23.3 |
21.8 |
20.4 |
17.5 |
21.1 |
19.4 |
16.9 |
16.9 |
20.1 |
18.3 |
| Trunk length |
12.6 |
15.6 |
14.0 |
12.7 |
16.4 |
15.0 |
15.2 |
14.1 |
16.4 |
15.2 |
14.5 |
12.4 |
14.9 |
13.9 |
14.7 |
12.7 |
15.8 |
14.8 |
| Abdominal length |
20.1 |
26.6 |
23.9 |
20.8 |
26.2 |
23.0 |
24.2 |
22.6 |
26.7 |
23.9 |
22.3 |
21.0 |
25.1 |
23.1 |
23.8 |
20.6 |
25.8 |
22.7 |
| Cleithral width |
27.3 |
32.0 |
29.9 |
23.8 |
26.8 |
25.2 |
30.4 |
28.4 |
31.8 |
30.1 |
27.8 |
24.9 |
29.7 |
26.8 |
27.8 |
26.2 |
29.5 |
27.4 |
| Body depth at dorsal fin |
13.2 |
18.0 |
14.8 |
14.1 |
19.2 |
16.3 |
17.8 |
14.7 |
18.4 |
16.7 |
15.4 |
13.8 |
16.7 |
15.2 |
17.3 |
15.1 |
18.7 |
16.8 |
| Body width at anal fin |
11.5 |
14.6 |
12.8 |
11.2 |
14.5 |
13.1 |
12.8 |
12.0 |
14.0 |
12.9 |
12.5 |
11.9 |
13.9 |
12.9 |
12.9 |
12.2 |
13.9 |
13.1 |
| Caudal peduncle length |
27.2 |
35.5 |
31.0 |
26.0 |
35.3 |
32.8 |
29.5 |
24.7 |
33.4 |
28.7 |
34.9 |
25.4 |
34.9 |
31.9 |
31.7 |
23.6 |
32.6 |
30.2 |
| Caudal peduncle depth |
7.8 |
10.2 |
8.7 |
9.6 |
11.5 |
10.5 |
11.6 |
10.2 |
12.3 |
11.1 |
10.6 |
9.8 |
12.4 |
10.5 |
10.0 |
9.5 |
10.6 |
10.0 |
| Percents of HL |
| Snout length |
48.6 |
63.2 |
54.5 |
49.0 |
60.0 |
53.2 |
53.2 |
50.0 |
59.3 |
55.8 |
52.5 |
50.8 |
58.3 |
53.5 |
50.5 |
48.5 |
54.1 |
51.8 |
| Orbital diameter |
13.4 |
18.8 |
16.0 |
10.9 |
14.5 |
12.1 |
10.0 |
9.5 |
14.2 |
11.4 |
12.0 |
10.8 |
14.9 |
12.2 |
13.9 |
13.8 |
18.5 |
15.7 |
| Interorbital width |
31.3 |
42.3 |
34.2 |
35.9 |
44.3 |
39.2 |
34.2 |
29.6 |
38.3 |
35.0 |
35.5 |
31.9 |
37.5 |
35.1 |
35.0 |
32.8 |
37.3 |
35.6 |
| Head depth |
42.2 |
53.9 |
45.3 |
43.3 |
53.8 |
47.6 |
46.4 |
43.2 |
48.6 |
46.5 |
48.7 |
44.7 |
53.3 |
47.8 |
49.2 |
47.8 |
54.0 |
50.0 |
| Left mandibular ramus |
9.2 |
12.5 |
10.4 |
10.0 |
14.1 |
11.8 |
12.6 |
9.1 |
14.4 |
12.4 |
9.6 |
8.2 |
11.1 |
9.7 |
12.2 |
9.3 |
13.2 |
11.7 |