The spelling of the word "more coldfish" is quite straightforward phonetically. The word "cold" is spelled with the open-o sound, IPA symbol /ɔ/, followed by the voiced consonant cluster /ld/. The word "fish" is spelled with the voiced consonant /f/, followed by the diphthong /ɪʃ/. The stressed syllable in the word is "fish", which is marked with a primary stress mark, /ˈfɪʃ/. Overall, the spelling of "more coldfish" follows the basic phonetic rules of English spelling.