Whale sharks. Are they whales? Are they sharks? This amazing creature is actually a shark. It is called a whale shark due to its enormous size, and because sharks are fish, the whale shark is the ...

Fish are able to excrete unwanted compounds (such as salts and nitrogen-containing ammonia) via the membranes of their gills ...

Here are ten interesting facts about these fascinating fish that will help you appreciate them even more. Betta fish are native to the shallow waters of Thailand, Cambodia, Vietnam, and Laos.

But, below, learn 15 fun facts about them and find out what makes ... that stingrays fed primarily on crustaceans, ray-finned fish, and worms. Supplemental research found that the species consumed ...

Many studies have been done on why fish school and interesting theories abound about this synchronized natural phenomenon. For example, one theory states that fish in the middle of the school ...

Pennsylvania's state fish is a freshwater favorite — the brook trout. The brook goes by several names locally, including brown trout, brookie and speckled trout.It is also the only native trout ...

How big they are: Up to 32 feet (9.8 meters) long How long they live: Up to 100 years, but usually around 25 to 50 years What they eat: Fish ... whether orcas kill for fun. The marine mammals ...