Pattillo et al. (1992)
Juvenile red drum can be found in regions of >25 ppt.
Ostrand & Wilde (2001)
In a laboratory experiment, the sharpnose shiner, smalleye shiner and plains minnow were shown to have high mortality curves at ~14 ppt, whereas the Red River pupfish and plains killifish were able to withstand salinities of up to ~31 ppt.
Edwards (1997)
These fish were observed to have a salinity tolerance of up to 10 ppt.
Lercari et al. (2002)
Abundance, biomass, species richness, diversity & evenness significanty increased from salinity of ~6 ppt to salinity of ~25 ppt.
Pattillo et al. (1992)
Most abundant in regions of >25 ppt salinity, although it is not uncommon to see them in 0.5 - 25.0 ppt salinity regions.