Amolops hongkongensis
The Amolops hongkongensis, commonly known as the Hong Kong cascade frog or Hong Kong torrent frog, is a species of true frog native to southern coastal China, with populations found in Guangdong and historically believed to be endemic to Hong Kong. It is distinct for its unique egg-laying behavior, depositing eggs on rock faces within the splash zones of cascades, and is a protected species in Hong Kong.
Key Facts
- ›Found in southern coastal China, including Guangdong and Hong Kong.
- ›Lays eggs on rock faces in the splash zones of cascades.
- ›Adults reach a snout-vent length of up to 40 MM.
- ›Tadpoles possess a ventral sucker for stream adherence.
- ›Habitat is threatened by silviculture, clear-cutting, and infrastructure development.
- ›Considered a protected species in Hong Kong under the Wild Animals Protection Ordinance.
Hong Kong Torrent Frog, Hong Kong Cascade Frog
Forest Streams, Cascades
Hong Kong, Guangdong
- Ventral Sucker On Tadpoles
- White Velvety Nuptial Pads On First Fingers
- Tarsal Fold
- Suction Discs With Diameter 3-4 Times Finger Width
About Amolops hongkongensis
The Amolops hongkongensis, commonly referred to as the Hong Kong cascade frog or Hong Kong torrent frog, is a species of true frog native to the southern coastal regions of China. While once believed to be exclusively found in Hong Kong, populations have also been identified in Guangdong province. This species is notable for its specific reproductive strategy, laying its eggs on rock faces located within the splash zones of cascades.
Distribution and Habitat
Originally described from Tai Mo Shan in Hong Kong, the Amolops hongkongensis is now known to inhabit areas in Guangdong as well. Within Hong Kong, it is found in both the New Territories and on Hong Kong Island, with documented occurrences in small streams in places like Lung Fu Shan. Its preferred habitat consists of forest-fringed, small hill streams, particularly those featuring cascades. The tadpoles of this species are equipped with a ventral sucker, an adaptation that assists them in adhering to surfaces and maintaining their position in the face of strong stream currents.
Description and Conservation
Adult Amolops hongkongensis, encompassing both males and females, typically grow to a snout–vent length of 40 mm. Their tadpoles can reach up to 25 mm in length. Key physical features include suction discs with a diameter about 3-4 times the width of the fingers, the presence of a tarsal fold, and white, velvety nuptial pads on the first fingers of adult males. The habitat of the Hong Kong cascade frog is unfortunately under threat from various human activities, including silviculture, clear-cutting, and the construction of dams and other infrastructure. Recognizing its vulnerability, the species is protected in Hong Kong under the Wild Animals Protection Ordinance, Cap 170.
Source: Wikipedia ↗
Frequently Asked Questions
Where is the Hong Kong cascade frog found?
The Hong Kong cascade frog is found in southern coastal China. Historically thought to be endemic to Hong Kong, it is now also known to inhabit Guangdong province. In Hong Kong, it can be found in the New Territories and on Hong Kong Island, specifically in areas like Lung Fu Shan.
What makes the Hong Kong cascade frog's breeding behavior unique?
This species has a distinctive breeding behavior where eggs are laid on rock faces. These locations are specifically within the splash zones of cascades, indicating a reliance on fast-flowing water environments for reproduction.
What are the physical characteristics of the Hong Kong cascade frog?
Adult Hong Kong cascade frogs, both males and females, typically grow to a snout-vent length of up to 40 mm. Their tadpoles can reach lengths of up to 25 mm and possess a ventral sucker. Adult males have white, velvety nuptial pads on their first fingers.
What are the main threats to the Hong Kong cascade frog's habitat?
The habitat of the Hong Kong cascade frog faces significant threats from human activities. These include silviculture, clear-cutting of forests, and the construction of dams and other infrastructure, all of which can degrade or destroy its preferred stream environments.
Is the Hong Kong cascade frog a protected species?
Yes, the Hong Kong cascade frog is a protected species in Hong Kong. It is safeguarded under the Wild Animals Protection Ordinance, Cap 170, highlighting its conservation importance in the region.
Related Frogs
Amolops archotaphus
Amolops archotaphus, also known as the Doi Inthanon rock frog, is a species of frog endemic to Chiang Mai Province in northwestern Thailand, potentially extending into eastern Myanmar. It was formerly considered part of a broader species complex and was only recognized as distinct in 1997. This species is characterized by its habitat near small waterfalls in mountainous regions.
Amolops formosus
Amolops formosus, also known as the Assam sucker frog, is a species of frog found in the high-gradient streams of northern India, northern Bangladesh, and Nepal. It is characterized by its green dorsum with chocolate-colored blotches and yellow dots, and fully webbed toes with discs, distinguishing it as a specialized inhabitant of fast-flowing water environments.
Amolops gerbillus
Amolops gerbillus, also referred to as the Yembung sucker frog or the gerbil stream frog, is an amphibian species native to South Asia, specifically found in the Himalayan foothills of Bhutan, India, Myanmar, Nepal, and Tibet. This species is distinctive for its amphibious lifestyle, equally dividing its time between basking in the sun and actively hunting and swimming in aquatic environments.