do silver dollar fish bite

[Eli]

Based on the information provided, yes, silver dollar fish can bite or nip other fish. While they are generally considered peaceful schooling fish, they are capable of exhibiting this behavior.

The provided context includes a report from an aquarium keeper stating that one of their silver dollar fish nipped a small piece out of an Oscar's anal fin. This indicates that their nipping can be more than just a minor annoyance and can cause actual physical harm to tank mates. This behavior might be more prevalent if the fish are not kept in proper conditions, such as in a school that is too small or a tank that is overcrowded, which can lead to stress and aggression. It is a known tendency for this species, especially towards fish with long, flowing fins.