Fish

Fish are aquatic vertebrates that are covered with scales and breathe through gills without needing to leave the water. Fish can be found in saltwater, freshwater, warm waters or cold waters. In this section, you'll learn all about aquarium and wild fish.

Are There Scaleless Fish?
Are There Scaleless Fish?

It may sound strange, but not all fish have scales. Fish are part of a very diverse group of vertebrates, as we can classify them according to their skeleton, jaw,…

The Most Common Fish Diseases
The Most Common Fish Diseases

Keeping an aquarium is no easy task, and if you're thinking of getting one, there are few things you should learn about first. One of these is what the most…