Question: must have fish freshwater aquarium?
Answer: Cory Catfish. If you've read other articles on my blog, you're probably aware that Cory Catfish are one of my all-time favorite freshwater aquarium fish. ...  Guppies. ...  Mollies. ...  Swordtails. ...  Kuhli Loach. ...  Neon Tetra. ...  Bristlenose Pleco. ...  Betta Fish.