I currently have a 20 G community tank with assorted tetras and danios. I'm ready to add a new tank to the house. I NEED some giant danios. They are beautiful fish, and from what I've seen in the pet store, have great personalities. I'd also like to add some red/orange contrast to the tank with some rose line sharks. Will these two fish do well together? And I was either going to get a 75 G or 100 G tank. Or something in the middle. Can you give me an estimate of how many I should put in there. Keep in mind I'll put a couple bottom feeders to clean up the food that gets missed (although I'm sure there won't be much with danios in the tank!). Thanks for the help.