Zebra nerite snails are herbivores and primarily feed on algae. You can feed them by providing a variety of algae-based foods such as algae wafers, blanched vegetables like zucchini or cucumber, and algae pellets. It's important to ensure that their diet is rich in algae to keep them healthy and thriving. Additionally, you can also provide them with a clean and well-maintained tank with natural algae growth for them to graze on. **

To feed a zebra nerite snail, you can provide them with algae wafers, blanched vegetables like zucchini or cucumber, and commercial snail food. It's important to avoid overfeeding as it can lead to water quality issues. Place the food near the snail's hiding spots or directly in front of them to ensure they find it easily. Remember to remove any uneaten food after a few hours to prevent it from decomposing in the tank. **

The number of yellow zebra nerite snails that can fit in a 70-liter tank will depend on the size of the snails and the amount of space they need to move around comfortably. As a general guideline, you could comfortably house around 7-10 yellow zebra nerite snails in a 70-liter tank. It's important to provide enough hiding spots and surfaces for them to explore to ensure their well-being. **

A zebra nerite snail moves across the water surface by using its muscular foot to create a rippling motion. This motion allows the snail to glide effortlessly across the water, using the surface tension to support its weight. The snail's foot secretes a mucus that helps reduce friction and allows it to move smoothly. This unique method of movement allows the zebra nerite snail to efficiently travel across the water surface in search of food and suitable habitats. **

The offspring of a zebra nerite snail in the aquarium are typically small, transparent larvae that will eventually develop into tiny snails. These larvae will often attach themselves to hard surfaces in the aquarium, such as the glass or decorations, and feed on algae and biofilm. As they grow, they will develop the characteristic striped pattern of the zebra nerite snail and become fully mature snails. **

Self-luminous bodies are objects that emit their own light, as opposed to reflecting light from another source. Examples of self-luminous bodies include stars, the sun, and certain types of light bulbs. These objects generate their own energy through processes like nuclear fusion or electrical current, which produces light as a byproduct. **

No, the luminous clock is not radioactive. The luminescence in the clock is typically achieved using a phosphorescent material that absorbs light and then slowly releases it over time. This process does not involve any radioactive materials. The glow from the clock is simply a result of this light-absorption and emission process. **

A luminous point is a theoretical concept used in physics and optics to represent a source of light that emits light in all directions. It is often used as a simplification in the study of light and its behavior, allowing for easier calculations and analysis. In reality, a luminous point does not exist as a physical object, but it is a useful tool for understanding the behavior of light in various systems. **