My thoughts...

Cat tails
Creeping Water Primrose
Some type of Rush.

Assuming the above is correct...Some CT isn't bad, but it can take over if left unmanaged. CWP is nice, but can be difficult to fish from the bank if the pond has shallow shorelines. It can extend out into the pond a fair ways. Rushes are always good to have IMO.

Fish on!,
Noel