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First documented occurrence of the starry toadfish Arothron firmamentum (Teleostei: Tetraodontidae) in the south-west Atlantic

The first documented record of the Indo-west Pacific pufferfish Arothron firmamentum was reported off Mar del Plata, Argentina at a depth of ∼45 m and is the first occurrence of the starry toadfish in American Atlantic waters. Some morphological and biological characteristics are given for the two specimens caught. Different explanations of how the two pufferfish specimens arrived in south Atlantic waters are discussed.