Electric Blue Acaras have light blue scales with yellow, green, and orange markings ... they are quite territorial! Avoid ...

All oscar fish have the same care requirements, but these varieties are guaranteed to make visitors want an aquarium of ... different shades of blue, with a brilliant light-blue pattern winding ...

[Blue Blade Fish] wanted to build an Arduino-based aquarium controller. He’s detailed the system in (so far) 14 videos and it looks solid. This isn’t just a simple controller, either.