The opposite sides of a trapezoid that are parallel to each other are called bases. The remaining sides of the trapezoid, which intersect at some point if extended, are called the legs of the trapezoid. The top and bottom sides of the trapezoid run parallel to each other, so they are the trapezoid's bases. The other sides of the trapezoid will intersect if extended, so they are the trapezoid's legs. The segment that connects the midpoints of the legs of a trapezoid is called the midsegment.
BODY STRUCTURE: The most expensive aquarium fish in the world is the Platinum Arowana also known as White Arowana.The most expensive ornamental fish can coexist with every bigger then their mouths and not aggressive fish species.More than an Arowana in a tank is dangerous because they will fight each other.
Salt-water tanks are for experts only and costs for freshwater tanks are a fraction of a salt-water setup. The cost of your time is not taken into consideration here. Setting up and maintaining a tank is a hobby and a joy. poorly maintained aquarium is an eyesore and the cause of death for the unlucky fish inhabitants. The cost of running an aquarium is important because if an aquarium owner is not willing to invest the necessary money and time in doing it right, then the fish will suffer and die as a result.