American Bullfrog (Lithobates catesbeianus)
Neo Tiew Road, 20th December 2008

When I first encountered this bullfrog, it was still very much alive, and sitting by the road just outside Khai Seng Trading & Fish Farm. No prizes for guessing where it had just escaped from.

After some time, the bullfrog attempted to cross the road, and after a few near misses, it was finally struck by a passing car. A horrible end, even for an unwelcome, potentially invasive species.

• The Digital Nature Archive of Singapore
• Non-indigenous frogs in Singapore
• Ecology Asia
• Wildlife Singapore
• AmphibiaWeb
• USGS NAS – Nonindigenous Aquatic Species
• USGS Northern Prairie Wildlife Research Center: Checklist of Amphibian Species and Identification Guide
• Amphibians and Reptiles of Europe
• Global Invasive Species Database
• IUCN Red List
• ARKive
• Animal Diversity Web
• National Geographic Animals

Moult of Orange Striped Hermit Crab (Clibanarius infraspinatus)
Changi, 20th June 2008

• Wild Fact Sheets
• A Guide to Seashore Life in Singapore
• Project Semakau
• The Tide Chaser: Porcelain Crabs & Hermit Crabs (Phylum Arthropoda: Infraorder Anomura) of Singapore
• BiotaTaiwanica
• Hermit crabs from the South China Sea (Crustacea: Decapoda: Anomura: Diogenidae, Paguridae, Parapaguridae)

Bicoloured Fan Clam (Pinna bicolor) (?)
Changi, 13th November 2008

This species can be confused with Pinna atropurpurea and Pinna deltodes, both of which are sometimes still considered synonyms of Pinna bicolor.

• NParks Flora&FaunaWeb
• The Digital Nature Archive of Singapore
• Project Semakau
• Wild Fact Sheets
• The Tide Chaser: Pteriomorph Bivalves (Phylum Mollusca: Subclass Pteriomorphia) of Singapore
• A Preliminary Checklist of the Molluscs of Singapore
• The intertidal molluscs of Pulau Semakau: preliminary results of “Project Semakau”
• Morphological Characteristics of Pinna bicolor Gmelin and Pinna deltodes Menke from the Seagrass Bed of Sungai Pulai, Johor, Peninsular Malaysia
• The Living Marine Resources of the Western Central Pacific Volume 1
• Species Bank
• OBIS Indo-Pacific Molluscan Database
• SeaLifeBase

Keyhole Sand Dollar (Echinodiscus truncatus)
Tanah Merah, 8th February 2009

• NParks Flora&FaunaWeb
• Wild Fact Sheets
• The Tide Chaser: Sea Urchins (Phylum Echinodermata: Class Echinoidea) of Singapore
• Singapore Red Data Book 2008
• The Echinoid Directory

Trumpeter Perch (Pelates quadrilineatus)
Changi, 2nd November 2008

It is likely that this Trumpeter Perch had been caught by an angler, and instead of being thrown back, was left on the path to die.

• NParks Flora&FaunaWeb
• Wild Fact Sheets
• A Guide to Common Marine Fishes of Singapore
• Fishes of Libong Island
• Fishes of Andaman Sea
• Fishes of Bitung
• FishBase
• The Living Marine Resources of the Western Central Pacific Volume 6
• Fishes of Australia
• Fishes of the NE Atlantic and the
  Mediterranean