
Oh my! I am so sorry for this terrible mishap! What a way for Sparky to go.I know how you feel though because I have actually done that twice when syphoning out fish tanks with baby fry.
It was a terrible accident,but sometimes one that you don't forsee until something does happen unfortunately.I have now bought a little strainer that fits right into my sink drain,so that it never happens again.
You did well by keeping him alive for a year,so remember that.