ranked from least to most expensive. Price Tag: $50-$150 The brightly colored Discus fish is native to the Amazon River basin ...

Curious about the most exotic and expensive fish in the world? Let us fill you in. Let's talk about the totoaba fish, which ...

As far as fish go, the Asian arowana is one of the most expensive aquarium species sold in the pet trade. It is a freshwater fish that has people paying in the tens of thousands of dollars for the ...

Narrator: Caviar is one of the most expensive foods in the world ... It wasn't until around the 20th century when these freshwater fish and their eggs became a rare commodity.