I did some googling a while back when thinking about keeping hawaiian red shrimp (Halocaridian Rubra) which needed 1.012 to 1.015 sg.
Nassarius vibex made the list
Tiger Nerite -Olive nerite = 1.010 sg +
Dwarf cerith
Maylasian snail = 1.012 sg +
Blue leg hermits = 1.010 sg +
Black mollies =1.010 or higher
Betta mahachaiensis = 1.10 -10.6 ppt, pH 6.87 -7.80
I also found mention of a skimmer would work over 1.010 sg
Biofilters at 1.011 sg, the bacteria shifts at 1.009 sg or 12 ppt
Live rock would work at 1.015 sg
Chesapeake Bay I believe ranges 15 to 20 ppt (1.0113 - 1.015 sg)
I don't have references for this info, mostly taken from brackish aquarium forums or random articles.
Nassarius vibex made the list
Tiger Nerite -Olive nerite = 1.010 sg +
Dwarf cerith
Maylasian snail = 1.012 sg +
Blue leg hermits = 1.010 sg +
Black mollies =1.010 or higher
Betta mahachaiensis = 1.10 -10.6 ppt, pH 6.87 -7.80
I also found mention of a skimmer would work over 1.010 sg
Biofilters at 1.011 sg, the bacteria shifts at 1.009 sg or 12 ppt
Live rock would work at 1.015 sg
Chesapeake Bay I believe ranges 15 to 20 ppt (1.0113 - 1.015 sg)
I don't have references for this info, mostly taken from brackish aquarium forums or random articles.