These games are addictive, I try to play on all of them but I get my butt smoked in the cichlids game. It is a great way to learn your fishies and polish your research skills.
Chinese swordfish, relative of the paddle fish, (Polyodontidae Psephuras gladius), up to 3 meters in length and endemic to the Yangtze river. I haven't found a picture yet but it is on a stamp.