Assertion: anglerfish's head | /r/CapableOf | flatten with enormous pectoral fins
Facets:
value: with threadlike ventrals
type: OTHER
Source sentences:
text: But development no doubt follows the same course for them as it does for the Mediterranean form; i. e., the foremost dorsal ray becomes bristlelike with the flap appearing at its tip; the last three of the free rays on the nape of the neck join together as the future first dorsal fin; the lappets of skin appear around the margin of the lower jaw and along the cheeks; and the head broadens and flattens while the young fish are still living pelagic, with enormous pectoral fins and with threadlike ventrals (fig.