Hello, This is my first time on this sight, and I pray it works! I am a Delta Guppy breeder and I am wondering if anyone would know why my females (2 have died) are being paralyzied. Their upper spine, behind the head, curves in and they can't move, the muscles work, I could feel them, but the spine just was locked... odd huh? Both of them were pregnant and the one was only days from having birth! Pleasse let me know what you think, and I did water testing, PH levels and the whole shibang, I don't understand it!