The catshark is the largest family of sharks with around 160 species in 17 genera. Just to confuse you further, catsharks are also known as dogfish. The main difference being that catsharks are oviparous (lay eggs) while
The needlefish, aka long tom or garfish, can be found in shallow marine environments, brackish (mildly salty) habitats, and even in freshwater. Needlefish look a lot like freshwater gars, but are only
Perhaps, the most commonly kept fish species in the aquarium trade is the molly, aka common molly, shortfin molly, or sailfin molly. These hardy and attractive fish can tolerate a wide range of
The discus, aka pompadour fish, is a genus of cichlid native to the Amazonian river basin in South America. These fish are prized in the aquarium industry due to their behaviors, body shape
