Fatma got 5 tetra fish for her birthday. She has a prism-like water tank whose base area is 0.5 square meters and height is 0.4 meters. Assuming Fatma fills the tank in its entirety, what is the density of the fish in the tank? fish per cubic meter

Step 1 ：Fatma got 5 tetra fish for her birthday. She has a prism-like water tank whose base area is 0.5 square meters and height is 0.4 meters.

Step 2 ：Assuming Fatma fills the tank in its entirety, we need to find the density of the fish in the tank. The density of the fish in the tank can be calculated by dividing the number of fish by the volume of the tank.

Step 3 ：The volume of the tank can be calculated by multiplying the base area by the height. So, the volume is \(0.5 \times 0.4 = 0.2\) cubic meters.

Step 4 ：Now, we can calculate the density of the fish in the tank by dividing the number of fish by the volume of the tank. So, the density is \(\frac{5}{0.2} = 25\) fish per cubic meter.

Step 5 ：Final Answer: The density of the fish in the tank is \(\boxed{25}\) fish per cubic meter.