"In the UK, four million households own a pet fish and it's estimated that 70% of those that keep fish have a tropical freshwater aquarium," said research associate Dr William Perry. "The carbon ...

These are better known as Siamese Fighting fish, and while one may be hypnotic and mesmerising, they are tricky to keep and ...

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 ...