ðə stˈʌmək ʌv tˈɜːɹɪɡˌɑːplɪtʃθiz ɪz ɡɹˈeɪtli ɛkspˈændᵻd wɪððə pɑːstˈɪɹiɚ pˈoːɹʃən fˈɔːɹmɪŋ ɐ lˈɔŋ, θˈɪn sˈæk ðæt ɪz hˈaɪli vˈæskjʊlɚɹˌaɪzd.
The stomach of Pterygoplichthys is greatly expanded with the posterior portion forming a long, thin sac that is highly vascularized.