The steps for opening pellets for Japanese fox sea fish are as follows:

1. Put a few more fish in the fish tank, because fox sea fish are social fish, and it is easier for them to open their mouths if you put more fish in them.

2. Try to use hatched brine shrimp and spring fish roe mixed with small grains of meat fish food for oral feeding.

3. Choose fish food that is red in color and small in size, because such fish food is easier to attract the attention of fox sea fish, and they usually start to eat within a few days.

Please note that although the above steps are universal, the individual differences of each fox sea fish may lead to different reaction. Therefore, it is recommended to closely observe fish behavior during actual operations and adjust feeding strategies as needed.