Carska Bara is 17 kilometers south of the town of Zrenjanin, in the west-central part of the Serbian section of Banat, near the mouth of the river Begej into the Tisa.

Human history in the area surrounding Carska bara goes back to 4,000 years BC, with uncovered mounds near Mužlja (Batka) and Titel (Kalvarija).

[6] Count László Lukács owned some land in the area, and often invited members of the Austrian royal family to hunt.

[4] Wetland consists of many smaller bodies of water: rivers, canals, lakes and ponds, covered with reed beds, willow thickets and rushes and it is known for its color diversity.

Previously, Carska Bara consisted of smaller and larger swamps, but in time it basically turned into a complex of Begej's meanders which are naturally getting shortened and narrowed and the bog gets more and more inclined compared to the river bed.

It anchors to the bottom of the ponds with its spikes and grows extremely fast, draining large amounts of oxygen from the water.

[4] Amphibians (fire salamander, edible frog) and reptiles (sand lizard, European pond terrapin) are also abundant.

Despite being a marshland, in Carska Bara there is a noticeable absence of mosquitos which local biologists attribute to the large number of frogs.

Terrapins are strictly protected and considered the "cleaners" of the bog, as none of the other animals (birds, snakes) are not eating dead fish.

Other species include buzzards, Eurasian sparrowhawks, common spoonbills, western marsh harrier, Montagu's harrier, red-breasted goose, osprey, greylag goose, stork, woodcock,[4][7] grebe, Eurasian bittern, auk, European bee-eater, and common redstart.

They nest in large colonies which are periodically moved from one locality within the reserve to another, based on the abundance of fish and its successful spawning.

[4] Some 50,000 greater white-fronted geese spend December-January each year in Carska Bara on their voyage from Siberia to the South Europe, via the Carpathian Mountains.

[10] Other birds include whiskered tern, rails,[14] swans, white-tailed eagles, ferruginous ducks, 8 species of herons, gulls and pelicans, while the cormorant colonies have 3,000 members.

[10] Swans in the reserve show aggressive behavior, attacking nests of all other birds, except for the migratory greater white-fronted geese.

The cormorants colony in Carska Bara has been described as the "horror movie set", with the trees dried from their droppings, with the strong smell of ammonia spreading around.

Wild hogs are also protected but in time their number greatly increased as they have no natural enemies in Carska Bara.

[16] Fish farm "Еčka" was appointed by Decree of the government of Republic of Serbia to act as an administrator and manager of Special Nature Reserve "Carska Bara" ("Official Gazette RS" No 56/94, 86/05 and 46/2011).

Fish farm "Еčka" was privatized and sold to the "Mirotin" company from Vrbas, and the maintenance of the reserve stopped almost immediately.

Additionally, the fish ponds of "Еčka“ extends directly to the north from the Carska Bara and are considered the greatest polluters of the bog.

In August 2017 the touristic cruise by the boat on the bog was suspended as the canals got filled with silt, due to the lack of maintenance, which prevents the navigation.

In spring, the fishpond should fill the Carska Bara with the fresh water, allowing for the spawning to occur, but they don't do that.

[13] In August 2019, local environmentalist groups asked again for the change of the caretaker of the reserve as, after two decades of neglect, the situation is bad and only getting worse.

The Stari Begej is already not navigable during a dry season, the only confirmed nesting ground of wild geese is destroyed, the reed and willows are already growing on the deposited silt, while some 50 bird species moved out of the reserve.

[19] Minister of Environmental Protection Goran Trivan said that in the end a total of 805 ha (1,990 acres) of the reserve was caught by fire.