Saleen made a mistake in his judgment as he did not expect the silver line golden spearfish to be able to move so quickly. He tried to think from the perspective of a grade-9 magic beast and decided not to hide too far away from it. In any case, the spearfish would not see him and Nailisi as threats. Therefore, he swam upwards so that he could block off the spearfish from reaching the pan's turtle alchemical boat.
The combination of the tornado with Snowkill was a very useful technique, but Saleen did not expect it to hurt the silver line golden spearfish at all. His water flame technique was only at grade-8, so the tornado and Snowkill that he had cast together at the same time were also only grade-8. The defense of the spearfish was so high that even grade-9 spells would have trouble overcoming it.