5. Paedocypris Fish
Also known as the smallest fish there is. It’s commonly found in Southeast Asia, particularly in the waters of the Philippines, Malaysia, and in Indonesia. The smallest adult female paedocypris measures 7.9 mm, and the largest measures up to 10.3 mm. They’re known to be able to live in water with a high level of acidity.
Wow it’s so small!! It must be extinct but it’s really cute! I want one.
Common marmoset