Figure 3. Performance of young tadpoles, 8 June at about 5 weeks of age, placed in either of four levels of NaCl dissolved water. Tadpoles in 0 % salinity are raised in four different tanks, at other salinities there was only one tank per family. Condition is measured as maximum body width divided by body length. Horizontal axis, salinity in ‰; ○, family A; X, family B; +, family C; ∆, family D.