sentence1: The results of the sheepshead minnow, Cyprinodon variegatus, inland silverside, Menidia beryllina, or mysid, Mysidopsis bahia, tests are acceptable if survival in the controls is 80 percent or greater and true is true and true is true and true is true and true is true and true is true .
sentence2: Tests are only acceptable when survival during controls is at least 80 percent.