Echeneid Fishes — Strasburg 
53 
KEY TO THE ECHENEIDAE 
la. Disk laminae 13 or fewer 
2a. Laminae 9-11, dorsal 30-40, anal 29-38 Phtheirichthys lineatus (Menzies) 
2b. Laminae 12-13, dorsal 16-22, anal 20-26 Remorina albescens (Schlegel) 
lb. Disk laminae 14 or more 
3a. Laminae 20-28, usually 21-27 
4a. Dorsal 31-42, anal 30-38 Echeneis naucrates Linnaeus 
4b. Dorsal 20-26, anal 20-26 Remile gia australis (Bennett) 
3b. Laminae 14-20, usually 15-19 
5a. Dorsal 21-27 (usually 22-26), laminae 17-20 
6a. Pectoral 20-23 Rhomhochirus osteochir (Cuvier) 
6b. Pectoral 26-29 - Remora remora (Linnaeus) 
5b. Dorsal 28-33, laminae 14-18 (usually 15-17) 
7a. Caudal black with white corners in specimens 27-164 mm standard 
length; dorsal and anal black with white edges, white becoming obso- 
lescent with growth Remoropsis brachypterus (Lowe) 
7b. All fins uniformly pale colored Remoropsis pallidus (Schlegel) 
TABLE 2 
Hosts or Habits of Echeneid Fishes 
ECHENEID 
NO. 
EXAMINED 
STANDARD 
LENGTH 
(mm) 
HOST OR HABIT 
Phtheirichthys lineatus 
3 
32.8-300 
free-living 
5 
44.0-55.8 
long-line buoy or bait 
Rhomhochirus osteochir 
4 
14.3-45.7 
free-living 
1 
51.2 
long-line buoy 
1 
48.4 
Acanthocyhium solandri 
4 
66. 7-85.0 
Tetrapturus angustirostris 
11 
49.8-230 
Makaira audax 
27 
38.5-313 
Makaira ampla 
Remora remora 
7 
31.3-77.4 
free-living 
2 
49.3-87.6 
Carcharhin us melan opterus 
12 
50.9-154 
Pterolamiops longimanus 
1 
222 
Prionace glauca 
1 
640 
Rhin codon typus 
Remoropsis brachypterus 
1 
27.1 
free-living 
1 
80.0 
Makaira audax 
2 
83.7-112 
Makaira ampla 
Remoropsis pallidus 
1 
118 
free-living 
2 
79-83 
Istiophorus orientals 
4 
116-184 
Makaira audax 
2 
128-152 
Makaira ampla 
5 
128-194 
Istiompax marlina 
Echeneis naucrates 
2 
50-57 
Ostracion lentiginosus 
(est.) 
and the author 
