The ammonia excretion of channel catfish, goldfish, rainbow
trout, and brown trout was higher in 9.0x salinity than in the other tested salinities, but
ammonia excretion by Gulf sturgeon and striped bass was lowest in 9.0x salinity. The urea
excretion of goldfish and channel catfish increased with increasing salinity, while that of Gulf
sturgeon did not change and that of all other species decreased.