The male then guards the site for the two or three months before the eggs hatch, using body undulations to fan the eggs and increase their supply of oxygen.
ðə mˈeɪl ðˈɛn ɡˈɑːɹdz ðə sˈaɪt fɚðə tˈuː ɔːɹ θɹˈiː mˈʌnθs bᵻfˌoːɹ ðɪ ˈɛɡz hˈætʃ, jˈuːzɪŋ bˈɑːdi ˌʌndʒuːlˈeɪʃənz tə fˈæn ðɪ ˈɛɡz ænd ˈɪŋkɹiːs ðɛɹ səplˈaɪ ʌv ˈɑːksɪdʒən.