“…Similarly, increase in erythrocyte concentration is related to a greater oxygen demand in stress conditions (BRAUN et al, 2010), whereas variation in total plasma protein is an indicator of osmotic imbalance (WEDEMEYER, 1996). The values for glucose, hematocrit, and plasma proteins obtained for tambatinga were similar to those for tambaqui (BRANDÃO et al, 2004;CHAGAS et al, 2005;2007).…”