In Pakistan the Dams are important for commercial fishing for mostly species belonging to carp and catfish family. Low water levels allow capture of fish which caught indiscriminately of size. Resulting in loss of both young and adult fish.
To deal with this government stocks these waters with hatchery born fish including some exotic species.In turn government awards contract for each water to major commercial fishermen on yearly basis. who tries to catch as many fish as he can in an year. Contractor also stops small independent fishermen from operating at all.
Fish is then shipped away to major cities to be sold in market. Considerable catch is lost due to poor storage on the way.
To deal with overfishing government should award contacts for multiple seasons. Stop stocking natural waters with exotic and destructive species like common carp and grass carp. Should protect breeding grounds of important game fish like mahseer from commercial fishermen. Should set size limits for fishing nets so that small fish can survive for multiple seasons.

[...] of fish which caught indiscriminately of size. Resulting in loss of both young and adult … pakistaniangler.wordpress.com/2008/03/20/why-low-water-levels-effect-fish-population/ Pakistani Angling Blog [...]
By: netto6 » Why low water levels effect fish population on April 11, 2008
at 2:52 am
Hi! I was surfing and found your blog post… nice! I love your blog.
Cheers! Sandra. R.
By: sandrar on September 10, 2009
at 3:06 pm