In Bulgaria a giant Danube sturgeon fish will be drawn in fire in the capital, Sofia.
Fears that the Danube's fish, molluscs, and plants could be killed, and drinking water contaminated, have been allayed by tests of the river's water quality.
Spoerri had heard of anglers in Yugoslavia fishing the Danube with hand grenades; Wade once met a man in the Solomon Islands who used a spiderweb attached to a kite.
Serbian fishermen, wearing protective gloves, scooped dead fish from the Danube today at the Belgrade suburb of Zemun.
He said large fish in the Danube could ingest any heavy metals carried downstream, potentially endangering people who eat them.
Current threats to the Danube Basin are numerous: intensive fish farming, hunting, canal and dyke construction, and many types of civic and industrial pollution, each posing problems that could be averted with this type of cross-nation, interdisciplinary approach.
The Ráckeve arm of the Danube is noted for freshwater fishing.
Among the fish found in the Danube delta are carp, sheat fish, pike, and zander, along with fish that migrate from the Black Sea, such as the Danube mackerel and the sturgeon, which produces caviar, Romania's most valuable fish product.
The pollution spill killed four people and injured more than 150 when it first occurred on Monday near the village of Kolontar, 45 miles from the Danube, and wiped out all the fish in the river Marcal, the first stream it hit.
