Table 1. Differing strategies for management of inland waters for fish production
Type of practice Stocking density
no/ha 		Lake area Ancillary practices
Supported natural < 500 Small - large Nil
Extensive 500 - 1000 Small - large Nil
occasional fertilization
Semi-intensive 1000-2000 Small- medium some fertilization
species eradication
artificial fauna
strain selection
hatchery management
Intensive 2000 - 3000 Small intense fertilization
species eradication
artificial fauna
system modification
genetic modification in
the short term
Aquaculture > 3000 Small Intense fertilization
Intense feeding
Aeration
System modification
Modification of water
body
Genetic modification in
the short and long term