Box jellyfish
Although the notoriously dangerous species of box jellyfish are largely restricted to the tropical Indo-Pacific region, various species of box jellyfish can be found widely in tropical and subtropical oceans, including the Atlantic Ocean and the east Pacific Ocean, with species as far north as California ("Carybdea confusa"), the Mediterranean Sea ("Carybdea marsupialis") and Japan (such as "Chironex yamaguchii"), and as far south as South Africa (for example, "Carybdea branchi") and New Zealand (such as "Copula sivickisi").
Blackstripe corydoras
The blackstripe corydoras or Bond's catfish ("Corydoras bondi") is a tropical freshwater fish belonging to the Corydoradinae sub-family of the family Callichthyidae. It originates in inland waters in South America, and is found in the Yuruarí River in Venezuela and the Corantijn and Rupununi River basins in Guyana and Suriname. In the system of "C-Numbers" developed by the German fishkeeping magazine DATZ to identify undescribed species of "Corydoras" in the aquarium hobby, this fish had been assigned number "C31" until it was correctly identified.