American Bullfrog

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American Bullfrog (Rana catesbeiana)
Upper Seletar Reservoir Park, 5th May 2017

American Bullfrog (Rana (Aquarana) catesbeiana)
Tampines Quarry, 11th September 2016

Two juvenile American Bullfrogs were found along the shore of the lake in Tampines Quarry. They were alive when first spotted, but had died by the time they were seen again an hour later. The other individual was featured in an earlier instalment of Daily Decay.

Young, newly metamorphosed American Bullfrogs are widely sold in aquarium shops in Singapore as live food for large predatory fishes, although it’s possible that these juveniles are also purchased to be used as bait for anglers, or are deliberately released by well-meaning people who do not understand the ecological harm that can result from releasing potentially invasive species.

American Bullfrog (Rana (Aquarana) catesbeianus)
Ang Mo Kio Town Park, 26th January 2015

This carcass of an American Bullfrog was shared by Leroy Alphonso.

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American Bullfrog (Lithobates catesbeianus)
Kranji Marshes, 14th November 2014

This dead American Bullfrog was seen by Noeleen Tan.

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Photograph by Kelvin K. P. Lim

Land snails Sarika resplendens feeding on frog carcass

Location, date and time: Pulau Tekong, reclaimed land at the south; 7 July 2012; 2125 hrs.

Observation: Eight examples of Sarika resplendens, the largest about 1.5 cm in shell width, were observed nibbling on the carcass of a small frog, probably Field Frog (Fejervarya limnocharis).

Remarks: The cause of the frog’s death is not known, but it is not likely to have been killed by the snails, which appeared to be scavenging.

Although Sarika resplendens is known to be herbivorous and detritivorous, it has apparently not been recorded to consume animal flesh (Tan et al., 2012).

Reference:

  • Tan S. K., Chan S. Y. & G. R. Clements, 2012. A Guide to Snails and other Non-marine Molluscs of Singapore. Singapore Science Centre. 176 pp.

Source: Singapore Biodiversity Records 2015: 15

Günther’s Frog (Hylarana guentheri)
Sungei Buloh, 9th December 2014

Any idea what species this is? Spotted at Sengkang Riverside Park.

Source: David Tan Instagram

This is an American Bullfrog (Lithobates catesbeianus), presumably released by people.