Fish were swimming in Earth’s waters long before the first animals crawled onto land, and they breathe by pulling oxygen from water through their gills. Many of the most popular aquarium species come from warm tropical rivers, where bright colors help them recognize mates and warn off rivals.
This section focuses on fish people keep, from beginner favorites like the guppy and the betta fish to schooling species such as the neon tetra and outdoor pond giants like koi. Profiles cover natural habitat, diet, tank or pond setup, temperament and breeding, so families and new fishkeepers can choose companions that suit their space.
The Bubble Eye Goldfish, hailing from the Cyprinidae family is a distinguished variety of small Goldfish. As the name suggests, the versatile feature of this Goldfish is the big sacs under the eyes. This fish does not possess a dorsal fin; instead, it has a plain back. These are very sensitive creatures and bad swimmers owing…