Bittrex shows that they may remove Teslacoin due to lack of trading. Seems strange, its going up in value, yet that's not acceptable to them? The website states there must be at least .2btc trade volume over 7 days to save it from being removed.
edit: Must be average of .2btc daily trade volume over 7 days.
They've change it. It must be everyday. It doesnt work anymore if you make all the volume in 1 day. Talking from experience.