Magical Aquarium

I don't know if anyone will even bother to read this--it's been so long since I last posted--but I finally had a spare moment and felt like blogging.

Jacob and I got a 36 gallon aquarium a few months ago (he begged and I caved). We have a tree, some plants, and a little skull that has bubbles coming out of the mouth. Oh yeah and we have some cute freshwater fish.

Our five rasboras are named Harry, Ron, Hermione, Neville, and Luna. We have two frogs named George and Paul (coming soon: Ringo and John). We have a snail which I think is named MoleButt but I'm not sure. We used to have a guppy named Little Jerry Seinfeld (has anybody seen the cockfight episode?) but he died a few days ago, rest his soul. And we have some other random fish that are nameless. They just look cool.

But that's not why our fish tank is magical. About a week ago, Jacob bought a blue snail to replace Vanilla Bear (our white snail that got sucked up the filter). The snail seemed all right the first day, but after that we never saw him again. He just disappeared. On Sunday, Jacob cleaned the entire tank and even took out all of the plants and looked under the hood but the snail was nowhere to be found.

That evening, while staring at the fish tank like he so often does, Jacob exclaimed that there was a tiny black fish swimming next to the tree. I took a look and sure enough there was some mystery fish in our tank.

Possible explanations?
1. Some of our fish bred but only produced one egg that we apparently didn't notice.
2. Our blue snail turned into the tiny black fish.

Personally I'm inclined to go with the more magical theory. It just seems more likely.