“…The high amylose content of the ingredients may have slowed down the digestion process. The slowest digesting carbohydrates (high amylose) are probably better used by fish(Pedron et al, 2011), as they do not overload the glucoseF I G U R E 3 Scanningelectron microscopy images of pirarucu faeces: a = reference diet, b = corn, c = lowtannin sorghum, d = defatted rice bran, e = broken rice, f = wheat bran, s = starch granules, pb = protein bodies, se = surface erosion, sp = spherulite, hs = halved starch, cw = cell wall. The images are at scales that allow for a better visualization of the details.…”