There are several potential reasons why your Tanganyika gold cichlids may not be eating. It could be due to stress from changes in their environment, water quality issues, illness or disease, or simply not liking the food being offered. It's important to check the water parameters, ensure the tank is properly cycled, and offer a variety of high-quality foods to entice them to eat. If the issue persists, it may be necessary to consult with a veterinarian or experienced fish keeper for further assistance. **

Yes, Lake Tanganyika is home to a variety of freshwater mussels and snails. The lake's diverse ecosystem provides a suitable habitat for these species to thrive. Mussels and snails play important roles in the lake's food web and contribute to its overall biodiversity. **

The species diversity in cichlids in Lake Tanganyika has arisen through allopatric speciation, which occurs when a population is geographically isolated and evolves separately from the original population. In the case of Lake Tanganyika, the lake's complex and varied habitat has led to the formation of different isolated populations of cichlids. Over time, these isolated populations have evolved unique traits and characteristics, leading to the formation of new species. The geographical isolation and the diverse ecological niches within the lake have allowed for the rapid diversification of cichlids through allopatric speciation. **

For a Tanganyika aquarium with shell-dwelling cichlids, it is optimal to use a fine to medium grain size of sand gravel. This type of substrate closely mimics the natural habitat of these cichlids, as they are used to living in sandy bottoms with scattered shells. The fine to medium grain size allows the cichlids to easily sift through the substrate to create and maintain their territories and also helps to prevent the shells from shifting around too much. Overall, a fine to medium grain size of sand gravel provides a suitable and natural substrate for shell-dwelling cichlids in a Tanganyika aquarium. **

The popularity of cycling or skiing can vary depending on the location and time of year. In general, cycling tends to be more popular in urban areas and during the warmer months, while skiing is more popular in mountainous regions and during the winter. However, it's difficult to determine which activity is followed more overall without specific data on participation rates in different regions and seasons. **

The excitement level of ice hockey versus soccer is subjective and can vary depending on personal preferences. Ice hockey is known for its fast-paced, physical nature with constant action and scoring opportunities. On the other hand, soccer is a more strategic game with longer periods of build-up play and intense moments during goal-scoring opportunities. Both sports have passionate fan bases and offer unique thrills, making it difficult to definitively say which is more exciting. **

It is highly unlikely that soccer will replace American football, basketball, baseball, and ice hockey as the most popular sports in the USA. These sports have deep-rooted cultural and historical significance in American society, and they have large and dedicated fan bases. Additionally, American football, basketball, baseball, and ice hockey have well-established professional leagues and infrastructure in the USA, which would make it difficult for soccer to overtake them in popularity. While soccer has been growing in popularity in the USA, it is more likely to continue to coexist alongside these other sports rather than replace them. **

Ice hockey is often perceived as more brutal than soccer due to the physical nature of the sport, which includes body checking and fighting. However, both sports have their own unique physical demands and risks of injury. While ice hockey may have more violent collisions, soccer players also face the risk of serious injuries such as concussions and ACL tears. Ultimately, the level of brutality in each sport can vary depending on the intensity of the competition and the actions of the players involved. **