IANAB IIRC salmons lay the eggs is swallow holes in a quiet part of the river. She is problably thinking that those idiots are going to spill the eggs and they

IANAB IIRC salmons lay the eggs is swallow holes in a quiet part of the river. She is problably thinking that those idiots are going to spill the eggs and they will be drafted by the water and die, so she has to try to keep the fight away.