Uvuvi

The area of Rufiji District is approximate 13,339 km2, while aquatic area is 600km2; this is 5% of the total area. Fishing is the second major economic activities after agriculture.

There are three types of fishing conducted in Rufiji district

Marine fisheries

This kind of fisheries conducted in marine water (Indian Ocean), there are coral reefs mountain in this area where endangered species found like dugong dugong, sea cucumber, sea turtles, black sharks, silicant, dolphin, sperm whale and other species like squid, octopus, tuna, king fish, marine cat fish, snapper, rays, sharks

Delta fisheries

This type of fisheries conducted in delta area where fresh water and marine water meet, also there are mangrove forest in this area which has total length of 75 km. from south to north. This area is wetland area (conserved area) where prawns fisheries, mud crabs, Europius mobius fishing were done. Also in this area there are other economic activities like salt production, crab fattening and fish farming.

Fresh water fisheries

The Rufiji River is the largest river in East Africa, run from west to East of Rufiji District and pours its water into Indian Ocean. There are 13 large ox-bow lakes along the Rufiji River, according to climatic change and economic activities some of these lakes were dried.  Species found in this area are cat fish, tilapia, anguillas species, labeo species, alestes species, cynodontis species, cynodontis Rufijgiensis.

In Rufiji district, fishing is the second economic activities while Agriculture is the first one.