New tank syndrome involves a dangerous buildup of toxins. Discover what causes it, how it hurts fish, and how to prevent it from happening.

Choose the Right Tank Size A fish can never be happy when it has restricted space to move. Most individuals have fish in bowls or extremely small tanks, which restrict swimming space and oxygen ...

Widow fish, also known as black widow tetras, are among the most popular choices for home aquariums. They attract many fish keepers because they are peaceful, small, and easy to manage. If someone is ...

Cardinal tetras are famous for their glowing blue and bright red stripes that run across their bodies. People often mix them up with neon tetras, but cardinal tetras have a bright red line that goes ...

The blue catfish, Ictalurus furcatus, is considered an invasive species in the Chesapeake Bay. Credit - forgotton0001. CC SA 2.0. The blue catfish, Ictalurus furcatus, is considered an invasive ...