Albino Grass Carp
Albino grass carp (Ctenopharyngodon Idella) are a common addition to many ponds as it has a reputation for eating blanket weed. . They will eat all aquatic vegetation, but also koi pellets and sticks. Albino Grass Carp can also grow in excess of 3ft! They are also incredibly good jumpers.
They have been released as a natural aquatic vegetation control in many countries where there reputation and name comes from.