The AXOLOTL . also known as a Mexican salamander or a Mexican walking fish, is a neotenic salamander, closely related to the tiger salamander. Although the axolotl is colloquially known as a "walking fish", it is not a fish, but an amphibian.
Pictus Catfish - This is sometimes confused with the Synodontis Angelus catfish but they are actually different. As per this type of catfish, this is really a native in Africa. - The 15 Most Beautiful Aquarium Fish In The World.
Glaucus atlanticus (commonly known as the sea swallow, blue angel, blue glaucus, blue dragon, blue sea slug and blue ocean slug). This little sea slug eats poisonous jellyfish and stores their venom for its personal use