The effects of black soldier fly (Hermetia illucens) meal (HM) on gut morphology, microbial community, and humoral immune response was evaluated in meagre (Argyrosomus regius) juveniles. For that purpose, fish with 18.0±0.02 g were fed a control diet (CTR) without HM, 3 other diets including 10, 20 30% HM (diets HM10, HM20 HM30, respectively), replacing 17, 35 52% (FM), for 9 weeks. distal inte...