Lophiiformes - Anglerfishes sixteen families, 250+ species. Stricly marine, many deep, bathypelagic. first dorsal fin with three rays on head, and first spine modified into Ilicium or "lure" for prey attraction. Sometimes lure capable of producing light. Gill opening restricted, tubular, near Pectoral fin base (bit not anterior to); Pectotal fin often used to prop up body and "Walk" at least in benthic forms.