Goldfish
The goldfish ("Carassius auratus") is a freshwater fish in the family Cyprinidae of order Cypriniformes. It is one of the most commonly kept aquarium fish.
Ameiurus
Ameiurus is a genus of catfishes in the family Ictaluridae. It contains the three common types of bullhead catfish found in waters of the United States, the black bullhead ("Ameiurus melas"), the brown bullhead ("Ameiurus nebulosus"), and the yellow bullhead ("Ameiurus natalis"), as well as other species, such as the white catfish ("Ameiurus catus" or "Ictalurus catus"), which are not typically called "bullheads".