The Freshwater Dolphin Fish Is A Rare Fish In The Trade And Nearly Impossible To Properly Id. There Are A Few Different Species Under this Common Name And Their Personalities Vary Slightly. A Few Species Are Mormyrus Longirosis, Mormyrus Kannume, Mormyrus Lacerda, Mormyrus Rume, And Mormyrus Tapirus. While Some May Be More Outgoing Than Others, Their Care Is Fairly Similar. Not Much Is Known About This Fish Still, But I Will Share What I Have Gathered.