There are several key differences between blue acara and electric blue acara. Firstly, electric blue acara have a more vibrant blue coloration. They also tend to be smaller in size, with adults reaching only around 4 inches in length. Additionally, electric blue acaras have a slightly different body shape, with a more elongated and streamlined appearance. Finally, these fish are also less aggressive than their blue acara cousins and make better candidates for community tanks.