Dogs, cats, hamsters, elephants, giraffes. You could probably spend a whole day naming all the animals you know. But even if you did that, you would still not be anywhere near the list of all animals that exist out there. But don’t blame yourself for not knowing about all of them, the world is full of species still unknown even to biologists. Here are some animals you might not have heard of, though.

Red-Lipped Batfish

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Found in the Galapagos Islands and off Peru, the red-lipped batfish is an unusual-looking fish mostly known for its bright, almost fluorescent, red lips. This species is closely related to the rosy-lipped batfish, which is found near Cocos Island by the Pacific coast of Costa Rica.

Lowland Streaked Tenrec

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Very closely related to the Highland streaked tenrec, the Lowland streaked tenrec can be found in the island country of Madagascar. Measuring around 5.5 in, these small creatures can weigh up to 9.9 oz. The Lowland streaked tenrec has a black spiny pelage with yellow stripes that serve as a warning to predators.

Mantis Shrimp

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Measuring up to 3.9 inches in length, the mantis shrimp can be found in both tropical and subtropical waters. The species is a member of the order Stomatopoda, which branched from other members of the class Malacostraca around 340 million years ago. With more than 450 species of mantis shrimp known to biologists, this creature can have a brown-colored body or vivid colors.