Ichthyomyini is a tribe of New World rats and mice in the subfamily Sigmodontinae. The species within this tribe share the characteristics of all being carnivorous semiaquatic rodents.
- Anotomys - aquatic rat
- Chibchanomys
- Ichthyomys - crab-eating rats
- Neusticomys - fish-eating rats
- Rheomys
| Ichthyomyini Temporal range: Pleistocene - Recent
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| Stolzmann's crab-eating rat (Ichthyomys stolzmanni) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Subfamily: | Sigmodontinae |
| Tribe: | Ichthyomyini Vorontsov, 1959 |
| Genera | |