actinophore
interspine
epural
Alectis ciliaris
spineback
thread-fish
threadfish
metapterygium
ray
dorsal fin
propterygium
finspine
pterygiophore
mesopterygium
hypural
superorder Malacopterygii
Malacopterygii
finnage
Tilly bone
abdominal fin
illicium
thoracic
spiny-finned
class Chondrichthyes
pelvic fin
goby
gudgeon
ventral fin
Chondrichthyes
preoperculum
chondrichthye
subinfraorbital
chimaera
order Pediculati
hypercoracoid
Pediculati
prickleback
pseudoclasper
pectoral fin
backfin
interoperculum
palatoquadrate
family Echeneididae
class Osteichthyes
Osteichthyes
branchiocardiac
perchlike
family Echeneidae
burrfish
Echeneididae