Ammonia is a chemical you don’t want in an angelfish tank. While it’s common in most aquariums, high levels are a problem. Angelfish become unwell […]

Introducing a new angelfish to an aquarium can be difficult because they can become hostile and aggressive. Also, angelfish can get bullied if housed with […]

Swim bladder disease in angelfish results in the fish swimming oddly or frantically. The disorder is progressive, eventually rendering the fish unable to swim correctly. […]

Yes, angelfish sleep. They do so by reducing their mobility and becoming very still. They don’t become unconscious but limit the amount of energy they […]

When it comes to sudden angelfish death, the reasons for their demise are broad. These tropical fish require a heated and filtered tank with regular […]

While not as aggressive as their Cichlidae brothers and sisters, angelfish nip and bite other fish. They only do this when defending their territory or […]

Angelfish are beautiful creatures, but a body part of the body that’s sometimes overlooked is the eyes. An angelfish’s eyes are usually clear with a […]

If you have more than one angelfish in your aquarium, you may have noticed them locking lips, which look like they’re kissing. Angelfish lock lips […]

For saltwater species, the differences between males and females are subtle. Freshwater variants are near-impossible to distinguish since they have little sexual dimorphism. Female angelfish […]