ichthyo-, ichthy-, -ichth- +

(Greek: fish)

Many fishes are arranged to form a big fish representing ichthyology.
ichthyomorphs
ichthyoneuston, ichthyoneustont
The ichthyological component of the neuston, typically fish eggs or fry. A neuston refers to small to medium-size organisms that live on or under the surface film of bodies of water.
ichthyonomy
The arrangement or classification of fishes.
ichthyonosia
An allergy resulting from fish; a fish allergy.
ichthyootoxin
A poison found in the roe of certain fish.
ichthyootoxism
Intoxication caused by the ingestion of toxic fish roe, characterized by gastrointestinal and neurological disturbances.
ichthyopaleontology (s) (noun); ichthyopaleontologies (pl)
The paleontology of fishes.
ichthyophagan
An ichthyophagist (fish eater).
ichthyophage
1. The eating of fish; also, piscivorous.
2. The consumption of fish in the diet.
ichthyophagi, ichthyophagian
Fisheaters; coast-dwelling people living on sea food.
ichthyophagia
ichthyophagist
Any human, animal, etc. that eats or consumes fish.
ichthyophagize
To eat fish.
ichthyophagous, ichthyophagus
1. Eating or feeding on fish.
2. The practice of subsisting on fish.
ichthyophagy
An animal just caught a fish to eat.

Other "fish" units: pisci-, Iktho Fish Story.