What should we put in the aquarium?

Possibilities

octopus: Requires salt water, might escape, but really cool and intelligent. Could be named Cthulhu!
Pirahna: lots of feces, might be hard to find, and might eat us
Betta (i.e. Siamese fighting fish): very pretty, supposedly easy to take care of [1]
- Male bettas are prettier, but tend to be very aggressive towards other fish
GloFish: genetically engineered zebrafish which glow in the dark. Unfortunately, they're illegal in California. :(
Let's do Koi carps. They are beautiful, intelligent and very easy to keep alive.--Perona 16:34, 14 Sep 2005 (PDT)
- won't the karp die if they are contained in a small space? like eagles, they were meant to soar to new depths! how about draining the water and keeping a giant snake instead / then you get the dual advantage of keeping pet rats which you get the thrill of killing daily :)
  - I'm pretty sure I've seen koi in smallish places before. Alternatively, we could give the koi wings and allow them to freely roam the lab. Or something.
    - No, koi will not die if they are in a small space. Pietro's large koi has been in his small office tank for over one year and it hasn't died, it's gone on a fish eating binge though. The koi has eaten 4 goldfish and 5 algae eaters.....put it in the lab aquarium.

Start with only a few fish for a few weeks, allow nitrogen bacteria to properly culture