ish ▁or ▁brown ish ▁in ▁color . ▁One ▁spec imen ▁was ▁black ▁with ▁a ▁blue ▁ab d omen . ▁It ▁is ▁car n iv orous , ▁can n ib al istic ▁and ▁has ▁a ▁large ▁app et ite . ▁It ▁fe eds ▁on ▁smaller ▁ju ven ile ▁group ers , ▁various ▁fish es , ▁squ id , ▁sh rim p ▁and ▁large ▁in verte br ates . ▁It ▁can ▁att ain ▁a ▁length ▁and ▁weight ▁of ▁larger ▁than ▁ 3 ▁feet ▁and ▁ 5 0 ▁pounds , ▁although ▁the ▁record ▁is ▁ 7 0 ▁l bs ▁and ▁ 4 3 " ▁caught ▁off ▁of ▁Pu ako , ▁Hawai i ▁North ▁of ▁K ail ua - K ona . ▁Hawai ian ▁group ers ▁are ▁prot og yn ious ▁and ▁reproduce ▁extern ally ▁( fer til ization ▁in ▁open ▁water / substr atum ▁egg ▁scatter ers ). ▁They ▁do ▁not ▁guard ▁their ▁eggs ▁once ▁laid . ▁It ▁is ▁a ▁long - l ived , ▁commer cially ▁important ▁species ▁( member ▁of ▁the ▁' De ep ▁Seven ') ▁and ▁highly ▁sensitive ▁to ▁over - har vest ing . ▁Lar ger ▁fish ▁may ▁be ▁a ▁hundred ▁or ▁more ▁years ▁old . ▁The ▁species ▁is ▁currently ▁listed ▁on ▁the ▁IU CN ▁Red ▁List ▁of ▁Th re aten ed ▁Species ▁as ▁Le ast ▁Conc ern ▁( LC ). ▁The ▁Hawai ian ▁name ▁for ▁this ▁gr ou per ▁is ▁h ā pu ‘ u , ▁ju ven iles ▁known ▁as ▁h ā pu ‘ up u ‘ u . ▁Typ