A 350-400 liter aquarium is a large tank that can accommodate a variety of fish and aquatic plants. This size of aquarium provides ample space for creating a diverse and visually appealing underwater environment. It allows for the inclusion of a variety of fish species, including larger and more active fish, as well as the opportunity to create naturalistic habitats with rocks, driftwood, and live plants. Additionally, a 350-400 liter aquarium provides more stability in terms of water parameters and is easier to maintain compared to smaller tanks. **

One liter of milk is heavier than one liter of water. This is because milk has a higher density than water due to the presence of proteins, fats, and other compounds. Therefore, even though both liquids occupy the same volume, the milk will weigh more than the water. **

Both 1 liter of milk and 1 liter of water have the same weight, which is 1 kilogram. This is because the density of water is 1 kg/L, and the density of milk is also very close to 1 kg/L. Therefore, the weight of 1 liter of milk and 1 liter of water is the same. **

No, 1 liter of oil is not the same as 1 liter of water. While both are measured in liters, they have different densities and properties. Oil is less dense than water, so 1 liter of oil will weigh less than 1 liter of water. Additionally, oil and water do not mix together, as they have different chemical compositions. Therefore, 1 liter of oil and 1 liter of water are not the same. **

Both 1 liter of feathers and 1 liter of iron have the same volume, so they would weigh the same. However, the feathers would take up much more space than the iron due to their lower density. This is a classic riddle that plays on the misconception that feathers are lighter than iron, when in fact, the weight is the same when measured in the same volume. **

Some colorful surface-dwelling fish that are suitable for a 54-liter tank along with gobies are Endler's livebearers, guppies, and celestial pearl danios. These fish are small in size and peaceful, making them suitable tank mates for gobies. Additionally, their vibrant colors and active swimming behavior can add visual interest to the tank. It's important to ensure that the tank is not overstocked and that the fish have enough space to swim and establish their territories. **

3-liter cars refer to vehicles that have an engine with a total displacement of 3 liters, which is a measurement of the total volume of all the cylinders in the engine. These cars typically have larger engines, which can provide more power and performance compared to smaller engine sizes. The 3-liter engine size is often found in sports cars, luxury vehicles, and some SUVs, offering a balance between power and fuel efficiency. **

If you have 1 liter of water and you pour it into a container with a volume of 500 milliliters, the container will overflow as it cannot hold the entire liter. However, if you pour the 1 liter of water into a container with a volume of 2 liters, there will be extra space left in the container. This is because the container has a larger volume capacity than the amount of water you poured into it. **