UPDATE- We gave a hashgocha at a bar mitzvah this past week, we insisted on Tilapia with a skin-tab & NO Heimish HASHGOCHA on the box.
We wrote to Dagim, received No response nor acknowledgement.
TILAPIA fish-Frozen, skinless filet, with 2 prominent kosher certifiers
International & Heimish Hashgochas.
Production date: "19 04 2011" (first day pesach?, ys)
Some of the production was done in June 2011, the prices are cheaper for April product. The importer is interested in $$$ bottom line. The Chinese took them knowingly for a ride.
The Mashgiach didn't "chap" the game, One supervised box for every 3-4 boxes from April that were unsupervised.