There is no major river in the world that does not have any tributaries.
jordan river.
Dry river
Yamuna
Kenia River, Arkansas
The Snake River, USA. The Nile
The Congo River which is the second longest river in the world IS the deepest river in the world. alot of info about the Congo river is still unknown. its been said theres more species of fish in the Congo river than in all the rivers and oceans combined. if you were to fish in the Congo river for ONE DAY you are expected to discover around 20 NEW NEVER-BEFORE-SEEN species of fish. the Congo river is also the ONLY river in the WORLD that ISOLATES fish populations due to the immense current strengths and depths. there is a popular theory recently thought of and currently being studied about the isolated fish populations basically being put into "EVOLUTION OVERDRIVE" which makes the fish evolve MUCH MUCH faster than fish in other bodies of water simply because different species cant inter-breed and create new hybrid species of fish like the fish in the ocean, ponds, and such. the Congo river is the least explored river in the world also because of the currents and because most people are scared to go diving in it because fish grow big enough to eat people!
a biterling is the smalest fish in ac ww, you can find it in the river.
Yes, it is bad to put tropical fish in with river fish. The river fish can make the tropical fish sick.
Cambodia depends on the river for food and to sustain their economy. Also almost all villages along the river fish off it as it is home to the most amount of river-fish species in the world.
Yes, you can fish in the Colorado River.
Rhine River fish.
The biggest size of river fish.
It would have been like a river without a fish
Yes, the Nile River does have fish. Approx. over 100 fish.
According to Wikipedia, The Great Fish River was given the name 'Great' to distinguish it from a river that was already called the Fish River in Namibia.