“…Some of these actions are conserved among vertebrates, although there are also species-specific actions; for example, GH is involved in the acclimatization to saltwater in teleosts ([ [14] , [15] , [16] ]). Furthermore, it has been previously described in fish and in the green iguana (an ectothermic reptilian species belonging to the Squamata order) that circulating levels of GH significantly increased when animals were exposed to changes in environmental temperature, likely as an adaptive mechanism ([ [17] , [18] , [19] ]). This diversity in GH actions could be related to the complex mechanisms involved in the regulation of its synthesis and secretion in the pituitary somatotrophs, which are essentially controlled by several hypothalamic neuropeptides and other factors ([ [20] , [21] , [22] ]).…”