The correct spelling of the word "conchfish" is pronounced as /kɒŋk fɪʃ/. The word is derived from the two words "conch" and "fish". The first part of the word, "conch" is spelled with a "c" instead of a "k" because the /k/ sound in this word is followed by a /ʃ/ sound. The second part, "fish" is spelled with an "f" because the sound is an unvoiced fricative. The word refers to a type of fish that has a long, spiral-shaped shell that resembles a conch.