ðɪ ˈeɪnəl fˈɪn ɚɹˈɪdʒᵻnˌeɪts æt ðɪ ˈɪsθməs ðə stɹˈɪp ʌv flˈɛʃ ɔnðə vˈɛntɹəl sˈɜːfɪs bᵻtwˌiːn ðə ɡˈɪl kˈʌvɚz.
The anal fin originates at the isthmus (the strip of flesh on the ventral surface between the gill covers).