The principal objective of the present study was to compare the
osmoregulatory and endocrine responses of euryhaline Mozambique
tilapia to acute changes in salinity with those of the less
SW tolerant Nile tilapia. Marked increases in plasma osmolality
were observed in both species at 2 h after transfer from FW to
SW. According to Wang et al. (2009), their strain of Mozambique
tilapia were also unable to survive for more than 6 h after direct
transfer from FW to SW, which resulted in a nearly twofold increase
in plasma osmolality.