Why do you say is ONLY HotBit when you quote "Idena is listed on Qtrade." from Tytanowy Janusz ? Maybe you want to say Hotbit is the only exchange listed on CMC Idena markets, which is a different thing.

Here is the qTrade link: https://qtrade.io/market/DNA_BTC where is a pretty decent volume. Also a good exchange, imo.