Fisco Exchange was launched in July 2016 in Japan. It is a fully licensed and regulated Exchange according to the Japanese financial services agency (JFSA). So there is no need to feet over whether it is a scam or not.
It supports bitcoin, monacoin and JPY. Being that Japan is one of the countries where bitcoin is highly traded, liquidity may be high on this Exchange but if one is to consider the number of assets traded on this Exchange, it is also possible for the exchange to experience low liquidity.
One of the best spot for this Exchange is its competitive fee. It charges only 0.0% on takers and makers. Also the withdrawal eis low. It charges only 0.0005btc which is lower than the industry standard.
Recently it was announced on its website that it has merged with another Japanese Exchange known as zaif. This merger will surely bring forth a better liquidity.
In terms of security, there is no need to exercise fear because since it was established, there has never been a report of hacking.