Learn how to say Stockfish correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word stockfish:
noun (plural same or stockfishes)
1a commercially valuable hake of coastal waters of southern Africa.
Merluccius capensis, family Merlucciidae
2 [mass noun] cod or a similar fish split and dried in the open air without salt.
Middle English (in sense 2): from Middle Low German, Middle Dutch stokvisch, of unknown origin; sense 1 (early 19th century) from South African Dutch