Fluid feeders (aka liquichapses) are organisms that feed on the fluid of other organisms. It can refer to:
Carnivore
- Hematophagy, feeding on blood
Herbivore
- Nectarivore, feeding on nectar
- Plant sap feeders
Pica
- Renfield's syndrome, feeding on blood as pica
- Urophagia, feeding on urine as pica