Two new species of freshwater crayfish have been discovered in Brazil.
Why it is true
Brazilian researchers discovered two new species of freshwater crayfish in the towns of Igrejinha and Bom Princípio, in the Serra Gaúcha region. The native animals live only in two Brazilian states and are important for the balance of aquatic ecosystems.
Source: PLOS ONE
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.