Keystone species are those that exist in an ecosystem to keep it functioning at its healthiest levels possible. These animals ...

Filled with live plants, substrates, and glimmering schools of fish, a perfectly curated aquarium is an awe-inspiring art form. But the best aquarium pets that aren’t fish prove that our finned ...

Freshwater and sea turtles may look similar, but neither one could survive in the other's territory for these reasons.

Sharks are becoming a popular feature in home aquariums, but there’s a clear distinction between freshwater and saltwater species. Freshwater sharks aren’t “true” sharks; they are small fish with ...