translate English to French: All declined when alewives were abundant, and those that did not become rare, i.e. the bloater, perch, and deepwater sculpin recovered when alewives declined.
Celles qui ne sont pas devenues rares, à savoir le cisco de fumage, la perchaude et le chabot de profondeur, se sont rétablies lorsque la population de gaspareaux a décliné.