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.
The fish itself ranges from $0.25 to upwards of $50 or $60 and more depending on the tank set up and size. The expense is in the aquarium, the filter the chemicals needed for the fish to thrive and the antibiotics you need to keep them alive when they get sick.ou have to have a filter and heater (for most fish). If you get a ten gallon tank you could get: 1 betta 2 or 3 platies 3 to 5 cories. A regular betta costs around $4. If you want fancy types you will pay more. Betta food is around $3. If you would get cories you would want shrimp pellets too.