Takeaways:
- Two new freshwater fish species have been discovered on the Philippine island of Palawan- the Rhinogobius estrellae and the Rhinogobius tandikan.
- Both species belong to a genus that have been found in temperate and and subtropical parts of Asia – this new discovery extends its range south into the tropics.
- The fish measure no more than 4.5 centimetres and are said to be aggressively territorial.
