The first experiment served to evaluate the monoalgal diets C.muelleri, I. galbana,
N. oculata, T. suecica (Table 1), and a commercial frozen concentrate of Tetraselmis sp. (similar in size to T. suecica); in the second experiment, the best treatment of experiment 1 was compared to three mixed diets formulated using C. muelleri, I. galbana and the frozen commercial product. C. muelleriwas used as the control
treatment, as well as in the mixed diets (1:1 and 2:1 cell number ratio with the second best diet I. galbana). The third was a mixture of C.muelleri+I. galbana+frozen
Tetraselmis sp. (2:2:1, respectively).