Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammal
- Order
- Eulipotyphla
- Family
- Soricidae
- Genus
- Cryptotis
Habitat
This species primarily inhabits freshwater streams, rivers, and wetlands in mountainous regions of Sumatra and possibly nearby islands in Indonesia. It prefers fast-flowing, clear waters with abundant vegetation for cover and hunting. Geographic range is limited to Southeast Asia's tropical forests.
Diet
The Sumatran water shrew feeds mainly on aquatic insects, small crustaceans, and occasionally small fish or amphibians, which it hunts by diving and foraging along stream banks. It is primarily nocturnal, using its keen senses to detect prey in low-light conditions. Feeding behavior involves quick, repeated dives to capture food items.
Behavior
Sumatran water shrews are solitary and territorial, marking their areas along waterways to avoid competition. They are primarily nocturnal, spending their active time swimming and foraging in streams, with agile movements both in water and on land. They exhibit aggressive behavior when defending territory but are generally elusive and avoid human contact.
Conservation Status
The IUCN status of the Sumatran water shrew is Data Deficient due to limited research, but habitat loss from deforestation poses a potential threat. Population trends are unknown, though it may be stable in remote areas.