Today I decided to clean my pump. It's been in the water 3 months (5 Nov) and I'd noticed the water pressure slowing down. I found a great cage for my pump at the thrift store, inserted the pump, wrapped that in old screen from a screen door, and then tied it all up with salvaged fishing net. The surprise came when I started unwrapping the screen and net. I started noticing movement when I put the pump on the ground. Upon closer examination, I discovered baby shrimp!
A few months ago, I found a posting on craigslist for free aquarium plants. So I picked them up from a guy over in Nu'uanu and in the process, brought home a guppy or two and (to our knowledge) one of his shrimp. He had quite a few, but I thought I only got one. Well, either I got one that was pregnant or I have unknown entities lurking in the fish water. Either way, I'm excited. I was so eager to get them back into their environment, and get my pump turned back on, that I didn't take pics.
When I got my first tilapia from Raychel in November, she brought me guppies too. Within weeks we had babies! Pretty cool. They are just plain brown, so I don't know what species they are (got one fancier one with the shrimp).
Oh, and the pump wasn't very dirty, good news indeed! :D