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Pseudogastromyzon myersi

Pseudogastromyzon myersi
Myer's Hill Stream Loach
Pseudogastromyzon myersi can reach up to 6 cm in length, but is usually measured around 3 cm. Sexually active males have more prominent nasal tubercles than females. This species is often confused with Pseudogastromyzon cheni, due to its uncanny similarities. 
Pseudogastromyzon myersi, better known as Sucker-belly Loach, is a benthopelagic Asian species endemic to Guangdong Province, China; it has also been reported in Hong Kong. This algae-feeding species is distributed in rapid, flowing streams.