Cut the catfish into pieces. Rinse with water mixed with salt to reduce the fishy smell.

Boil the rinsed catfish pieces in water briefly, just until partially cooked. Drain the water and rinse the catfish again with clean water to remove any remaining odor.

Heat a pan over low heat and add cooking oil. Stir-fry the chili paste until fragrant.

Add the catfish pieces and stir-fry with the chili paste.

Add the prepared pad cha stir-fry mix.

Season with MSG (optional), fish sauce, oyster sauce, and sugar. Stir well, then add a little water and continue stir-frying until everything is well combined.

Transfer to a plate and serve.