F2Pool is one of the largest Chinese Bitcoin pool, launched in the year 2013. It is better known as Discus Fish mining pool in the world of Bitcoin mining. Apart from Bitcoin, Litecoin, Ethereum, and Zcash are mined here. The difficulty level in mining is based the hash power, as the site uses stratum mining protocol and vardiff. The site comes with an English interface and is simple and easily understandable. F2Pool operates on the PPS reward system and charges a fee of 4% which is quite lofty. The payouts are made every day by setting a limit on withdrawal, i.e. 0.001BTC.