Specific Habitats:
* Rivers and streams: These are the most common habitats for freshwater crabs. They need flowing water with clean oxygen and adequate hiding places like rocks, logs, and vegetation.
* Lakes and ponds: Freshwater crabs can also be found in still water bodies. They may prefer areas with vegetation or rocky shores for shelter.
* Swamps and marshes: These environments provide a similar habitat to rivers and streams, with plenty of moisture and hiding places.
* Springs and caves: Some species thrive in these unique environments, adapted to the specific conditions.
Key factors for habitat selection:
* Water quality: Freshwater crabs are sensitive to water pollution and need clean, well-oxygenated water.
* Temperature: They are generally adapted to a specific temperature range and prefer climates that match their needs.
* Food availability: They rely on a variety of food sources, including algae, plants, and insects.
* Shelter: Freshwater crabs need hiding places to escape predators and the elements.
Geographical distribution:
Freshwater crabs are found all over the world, except for the polar regions and some very arid areas. They are particularly diverse in tropical and subtropical regions.
Remember: The specific location of a freshwater crab species depends on its individual adaptations and requirements.