Blue discus fish are bred in several color varieties, including plain blue and blue-turquoise with dark or red, almost maze-like patterns. Discuses grow to around 8.6 inches (21.8 centimeters ...

Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the ...

Diet Feeds on crustaceans, small fish, and shrimp ... downplaying the threat of this small but deadly animal. Although their venom is lethal, blue-ringed octopuses are not aggressive by nature.