GST classification omission removes tariff entry for certain aquatic invertebrates, altering their reduced tax treatment under Schedule 1. The tariff entry for aquatic invertebrates other than crustaceans and molluscs-including frozen, dried, salted or in brine; smoked forms; and flours, meals and pellets fit for human consumption-was omitted by notification no. 43/2017 effective 15-11-2017, and had been included in Schedule 1 with the then-applicable reduced GST treatment up to 21-09-2025.