Mommy Moral Dilemma

Last YEAR Marc took the kids to the pet store to get Elvin" our pet fish, who knew a Beta fish would live for over a year, especially with the kind of neglect it received in this house.   Not to mention it was the sorriest looking beta fish in the world.  Have you ever seen a female Beta fish,  they are pale white and don't have those pretty tales.. looks like an oversized Minnow.  I think the kids picked it out because they felt sorry for it.   Anyhow, his bowl was quite grimy and gross, so I cleaned it, cleaned it up really good, put him back in his pretty little bowl, and 20 minutes later he was a goner.    So do I tell the kiddos, or do I take a drive to the Walmart and buy another oversized minnow???  I'm really not up for the whole "he's in a better place, sorry I killed your poor little fish" discussion.   But maybe they would pick out a new fish, a fish that looked like it belonged in a bowl and not in a creek?  And maybe honesty is the best policy???  Isn't that the cleanest fish bowl you ever saw?  When I told Marc the fish died, his first reaction was, "you didn't clean it off with bleach did you".  Uhh, yeah I did, but it was gross, and I rinsed the little castle and the rocks off really good afterwards.   I don't know if I will be able to sleep tonight knowing I am a fish murderer...