Source : Webster's Revised Unabridged Dictionary (1913)

Ichthyolatry \Ich`thy*ol"a*try\, n. [Gr. ?, ?, a fish + ? to
   worship.]
   Worship of fishes, or of fish-shaped idols. --Layard.

Source : WordNet®

ichthyolatry
     n : worship of fish [syn: {fish-worship}]