El I-grouper iyinhlobo ye-hermaphrodite eyi-proterogynous, efinyelela ekuvuthweni ngokocansi eneminyaka emihlanu bese iba owesilisa kusukela eminyakeni eyishumi, yize abanye besifazane bengahlala benjalo iminyaka eminingi, baze bafinyelele usayizi omkhulu.
Sekuyiminyaka eyishumi ukuba khona kwabaqashiwe kuqinisekisiwe ezindaweni eziningi ezisenyakatho, okukhombisa ukuthi ukukhiqizwa kwenzekile enyakatho kakhulu kunalokho obekucatshangwa ngaphambili. Ucwaningo oluningi lukhombisile ukuthi eIzinhlobo zeqembu endaweni evikelekile yeMedes Islands.
Isimo se ukuzalanisa kwenzeka ngoJulayi futhi kuyaqhubeka kuze kufike ku-Agasti, kufana nezinsuku ezizungeze inyanga egcwele. Yize amanye amaphethini ahlobene nokuzala esebonile, isenzo sokukhishwa kwemikhiqizo yezitho zobulili asikaqinisekiswa, kepha ukuqapha okwenziwe ngabesifazane besifazane be-ovate, okwaziwa ngamabala azungeze amehlo, angalokothi ahlangane kubantu ababili, kukhombisile ukuthi lezi Iphinde yavela ingenalutho amaqanda ngemuva kwezinsuku ezimbalwa, ubufakazi obungenakuphikwa bokuthi ukuzala kwenzeke. Amaqanda, njengakwezinye izinhlobo ze-serranids, wakhe i-pelagic.
I-grouper imayelana ne- izinhlanzi ezibukeka ziqinile futhi ziyizigaxa. Ikhanda, amehlo nomlomo kukhulu. Umhlathi ongezansi udlula owaphezulu. I-maxilla yethula izikali ne-supermaxilla, isici esabelana ngaso nawo wonke ama-congener aso futhi esibahlukanisa uhlobo lweSerranus.
Ngokuyinhloko inhlanzi yasogwini, umthandi wasezansi onamadwala yakhiwe ngamabhulokhi amakhulu lapho ithola indawo yokuhlala ngokuya ngezilinganiso zayo. Ukujula okutholakala kulo kuyahlukahluka phakathi kwamamitha ama-5 kuye kwangama-400, kepha ukusatshalaliswa kwamamethrikhi kungumsebenzi wezinga lengcindezi yokudoba elenzelwa lona.
Okumane nje idla ama-cephalopods, lapho ezizwa ethambekele ekukhetheni, yize engazideleli izinkalankala noma ezinye izinhlanzi.