Well why should any one care...
India is a poor country and the people who net river mouths are poor people. asking them to stop doing it is " garib admi ke pet pe laath". Thats what the local corporators say.
Fish was there earlier and fish will be their later. " Chota machii net se nikalta hain na? Toh kya tension? Dont worry".
I have no idea what our Forest Dept. has to say on this.I belive the rivers are not under their dominion and if they are; they are interested in earning more revenue from areas much more frequented by anglers.
The solution i think is to arrange fishing trips with a huge group to these places and get permits from the local FDO for angling. This will make them look up and try to keep these places clear of nets.
Do something like Medha patkar and go on an indefinite fast with media attention.
Ruler of sun.