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This is an incomplete list of possible diets. While the possible diets for your submissions are not limited to the terms on this list, please refrain from using an alternate version of terms here.

Predatory, Carnivorous, & Parasitic

Consumer: A microbe that eats other microbes.

Carnivore: A species that eats live fauna.

Parasite: A species that feeds off another creature but doesn't kill it.

Parasitoid: A species that is parasitic during part of its life cycle, especially one that eventually kills its host.

Sanguivore / Hemophagic A species that drinks the blood of fauna.

Insectivore: A species that eats only small exoskeletal fauna.

Piscivore: A terrestrial species that eats only aquatic fauna.

Ovivore / Oophagy: A species that eats the eggs of fauna.

Pyroivore / Stachtophagic - A carnivore which uses fire to kill its prey, likely consuming the charred remains.

Pathogen: A microbe that enters another organism with the intent to reproduce at the expense of the host.

Cytovore: A microbe that consumes the cytoplasm from other microbes.

Paedophagic / Paedophagy: A species that eats only young fauna.

Herbivorous

Herbivore: A species that eats flora.

Nectarvore: A species that eats the nectar of flora.

Pollinivore / Palynivore: A species that eats the pollen of flora.

Frugivore: A species that eats the fruit of flora.

Granivore: A species that eats the seeds or nuts of flora.

Folivore: A species that eats the leaves of flora.

Rhizophagy: A species that eats the roots of flora.

Sapivore / Mucivore: A species that eats the sap of flora.

Mycophagic / Mycovore: A species that eats the fungi part of flora.

Xylophagy: A species that eats the cellulose of flora.


Heterotrophic & Energy-related

Photosynthesis: A species that converts light into food.

Photovoltaic: A species that converts photons into electricity.

Chemotroph / Chemosynthesis: A species that converts non-biological chemical energy into food.

Kinetivore: A species that converts kinetic energy into food.

Radiotroph: A species that absorbs radiation and converts it into food.

Osmotroph: A species that uses osmosis to absorb dissolved organic compounds.

Thermotrophy: A species that absorbs thermal energy to convert into food.


Scavenging, Waste-Consumption & Mutualism

Scavenger: A species that eats dead fauna.

Kleptoparasite: A species that eats dead fauna killed by other organisms, generally by chasing it off or threatening it.

Detritivore : A species that eats dead flora and other rotting biomatter.

Coprophagic: A species that eat the dung of other species.

Lepidophagy: A species that eats the skin of fauna.

Trophallaxic: A species that eats the vomit of other species.


Other Methods

Microbivore - A macro species that eats microbes.

Planktivore - A marine/aerial macro species that eats microbes and mesobiota/meiobiota.

Filter-Feeder: A macro species that eats microbes by filtering liquids.

Lithivore / Lithotroph: A species that converts minerals into energy for food.

Geophage: A species that consumes earthen compounds such as soil.

Omnivore: A species that eats both fauna and flora.

Liquivore: A species that dissolves its food.

In beta we actually decided many of these terms are redundant and only create confusion. Methods of feeding or killing prey, like liquivore, pyrovore, and filter-feeder, should not be included. Insectivore is taxon-specific, even on Earth it doesn't necessarily include non-insect arthropods. And there are waaaaaaaaaay too many variations of "herbivore" here.

I suppose it makes sense to swap out something like "Liquivore (Maple sap)" with "Herbivore (Maple sap)". Is it worthwhile to change the terms everywhere, or will that only be a rule for future organisms?

QUOTE

Parasitoid: A species that feeds off or uses another creature, at its expense, for an extended period of time before killing it.

This definition is not entirely accurate; a parasitoid is an organism which lives parasitically in the first part of its life history before living the remainder of it free-living (examples: wasps, nematomorphs, Xenomorphs), and this does often result in the death of the host.

Wiktionary offers a better definition.

QUOTE (Wiktionary)

Any organism that is parasitic during part of its life cycle, especially one that eventually kills its host.