I don't know. It looks like Atlantic Cod aren't bouncing back[0], and neither are alewife, rainbow smelt, bloater and others in the Georgian Bay[1]. Meanwhile, apparently, Pacific Sardine have collapsed from 1.8M to 0.2M in the last 20 years[3]. These data paint a grim picture.

0. https://i.pinimg.com/originals/7e/f7/c3/7ef7c3244b3e4fd1f224...

1. https://www.stateofthebay.ca/wp-content/uploads/2018/05/prey...

3. https://usa.oceana.org/wp-content/uploads/sites/4/593/sardin...