Hello all I am new here and am in need of desperate help. I have an outdoor pond with a couple of koi in it not very deep five feet at the most. Today I noticed at the bottom of my pond little white maggot looking things, they do not move but they just sit at the bottom of the pond, I took one out and sacrificed it to better examine it and when I did a jelly like substance came out. Can anyone help me in regards to this matter I don't want my fish to get sick or die.