ETYMOLOGY
from Greek πᾶν, pan, (“all”, “of everything”, “involving all members” of a group)
+ from Latin ichthyophagus,
from Greek ἴχθυοϕάγος from Greek ἰχθυο- (fish-) + -ϕάγος (eating),
from ϕαγεῖν (to eat) + -ous
EXAMPLE
“…The caranx, trachurus, or bastard mackerel, probably corresponds with the individual so called by Oppian and Athenaeus. It abounds in the Mediterranean, and is a dry coarse fish, fit only for hungry boatmen and panichthyophagous puss…”
From: Fraser’s Magazine for Town and Country
Volume 47, March 1853
The Caranx
Lexicophilia 