Thanks for the report, organofcorti.
I am surprised to see Discus Fish growing so rapidly for the past months.
Is it indeed a pool? Or is it sort sort of private mining farm?
Discus Fish is a Chinese pool that was started by Chinese student bitcoin enthusiasts. I don't know much more about it. There's a bit of information about the relationship between Discus Fish and "For Pierce and Paul" here:
http://bitcoinstats.com/irc/bitcoin-dev/logs/2013/12/29Discus Fish is the pool operators nickname, his/her pool is f2pool.com
Pity that no much public data can be found there for unregistered user.