E.intheC
Active member
<a href=showthread.php?s=&postid=14407225#post14407225 target=_blank>Originally posted</a> by Obi-dad
I am not sure that water temp really needs to be matched. I have been snorkeling over reefs where the temp change from one side of the reef to the other is large (ocean side to lagoon side) - and fish move back and forth between the different temps, no problem.
In addition to this: I'm sure the salinity changes a lot near the freshwater river inlets. Not only do brackish fish thrive here, but I'm sure the water around these areas isnt' at full salinity either..
Not to say that all ocean areas are like this