"White Sturgeon, Fraser River area of British Columbia. This is the largest freshwater fish in North America. Can grow up to six meters in length, weigh over 600 kilograms, and live over 150 years." Catch and Release for a day of fun!
Ghost Knifefish (Apteronotus albifrons) is a tropical fish that can grow to 20 inches - and is once again, semi-aggressive so should be with other semi-aggressive fish and not community unless you want them to potentially become its tasty noms.
Top 35+ Beautiful Types of Betta Fish with Amazing Pictures