While it is generally true that freshwater fish are smaller than their oceanic counterparts, there are also some significantly sized fish to see in lakes and rivers the world over.

Obviously, considerations like location, environment, climate, food supply and presence of fishermen all play a part in how big something can grow. There are plenty of examples out there that may not be as colorful as some saltwater breeds, but are just as hefty and interesting to learn about. Check out these ten biggest freshwater fish in the world.

1. Beluga Sturgeon

2. White Sturgeon

3. Freshwater Stingray

Found mostly in the rivers of South East Asia, these flat creatures can grow immensely large. They grow to over 1000lb and 15 feet across. One of the more disquieting features it possesses is the 15 inch long tail. Apparently, it has the capability to pierce bone. Like many other species on this list, these fish are declining in number due to overfishing and the construction of dams.

4. Catfish

The Mekong Giant Catfish enjoys a curious relationship with humankind and its habitat. In Thai folk lore, it is regarded with reverence, but in its own home the ongoing industrial work on the Mekong is forcing it out of its traditional habitat.

5. Alligator Gar

6. Arapaima

This interesting big fish is generally found in the Amazon. The fish can be over eight foot in length, and weigh over 300lb. Some call it a ‘living fossil’ owing to its long history, and curious habits, such as feeling the need to take in air from the surface. Owing to a number or reasons, ranging from a local predilection to its meat, to medicinal properties, to the always present over fishing they are in decline. They were mostly caught by nets or spear fishing, and it is thought there are around 2 million left in the wild today.

7. Paddlefish

8. The Nile Perch

9. Taimen

Also known as the Siberian Salmon, this monster has been knows to gulp down birds and rodents. Growing to over six foot and weighing over 200lbs, these fish dominate these area they swim in. Even though they mainly are in Siberia, they also feature in Chinese and Mongolian folklore. Again, this is a species under threat, but the promotion of a catch and release policy for sports fishermen may be of help.

10. Carp

Their size can vary drastically depending on the, but 17kg Mirror Carp have been caught, and Koi Carp can grow to 36 inches long. There are a number of sub-species of carp that are generally plentiful, although the US believes them to be a nuisance to native fish stocks. So, if you’re looking for good meal, chow down on a carp, one of the largest freshwater fish in the world, and help native fish at the same time.