My friend is getting a 75 gallon fish tank next week and we were at petsmart tonight and he really liked the red belly pacu its only about 4-5 inches, and he asked me if he bought it today if i could keep it in this empty 20 gallon i have set up until his 75 gallon is ready so i said sure, so i have this red belly pacu in my 20 gallon and its kind of freaking out i dont know what to do you can see him in this video sort of like hitting the glass and stuff http://www.youtube.com/watch?v=rm2WQe8y_4s please help!!! thank you !
