Nruudulised

Nruudulised, also known as the Nudulidae, are a family of small to medium-sized, freshwater fish native to the rivers and streams of Southeast Asia. They are characterized by their elongated, cylindrical bodies, which can range in color from olive-green to brown, often with darker spots or stripes. Nruudulised have a single dorsal fin, a long anal fin, and a pair of barbels on their chin, which they use for sensing their environment. Their diet primarily consists of small invertebrates and plant material.

The family Nudulidae is divided into two genera: Nudulus and Paranudulus. Nudulus includes species such as the Nudulus nudulus, which is found in the Mekong River basin, and the Nudulus orientalis, native to the Yangtze River. Paranudulus, on the other hand, includes the Paranudulus longicauda, found in the Mekong River basin as well.

Nruudulised are of particular interest to ichthyologists due to their unique adaptations and ecological roles. They play a crucial part in the aquatic food web by controlling populations of small invertebrates. However, their populations have been declining due to habitat loss and pollution, making them a species of conservation concern. Efforts are being made to protect their habitats and monitor their populations to ensure their survival in the wild.