They make great aquarium fish, as I tell everyone. You can find them in a pet store as "Danios" or "Zebra Danios". They are schooling fish, which means you should get 3 or more :-)

I 'm going to perform a Southern Blot analysis but I have difficulties in digesting genomic DNA from total adult Zebrafish; I've extracted DNA using different protocols like that of Sambrook et al (i.e. Maniatis) or Akimenko, from Blin and Stanford, resulting in uncut DNA. I'm very disappointed.