The new tetra fish species measure about half an inch long, according to researchers. Photo by Lopez, G. G. S., Souza, C. S., Reia, L., Mantuaneli, L. A., Morales, B ...

Setting up an aquarium is exciting until you realize that not all fish get along, and some need water conditions that clash..

Are you new to fish-keeping and planning to start an aquarium? Well, while keeping an aquarium at home needs efforts and time ...

The fossil of a tiny fish found in southwestern Alberta provides new insight into the origin and evolution of otophysans, the supergroup of fish that includes catfish, carp and tetras, which today ...

During a field expedition to the “heart” of the Amazon basin in Brazil, researchers discovered two small fish in the region’s tea-colored waters that were previously unknown to science. The fish, both ...