The silverside's strongest form of defense is the strength-in-numbers strategy, where fish will school in large numbers to diminish their chances of being the one picked off by a predator.
The dam is used as a reservoir of fresh water, to regulate the flow of the river, for fishing (carp and silverside), sailing, canoeing, and windsurfing.
Opossum shrimps play an important part in the estuarine food chain and are consumed in large quantities by such fish as the striped bass, inland silverside, whiffs and flounders.