If you want JomComment to work with Joom!Fish you'll need to modify the components/com_jomcomment/jom_comment.php file in several places. Run a search for languages and you will find include statements which are loading the defined langauge file. First bring $mosConfig_lang into local scope by adding it to the line of global variables for the function you are editing. Then right before the include statement reset the $pc_language variable to equal $mosConfig_lang.'.php' and you're all good.
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