Common Goldfish– is one of the most popular fish in the aquarium hobby. It is also one of the easiest fish to keep which makes it an excellent choice for beginners. The Common goldfish possess a long dorsal fin with a forked caudal and a short caudal peduncle. The body is tapered at ...
Such was the case in the Markermeer, a 270-square-mile (700-square-kilometer) lake that was created in 1932 by walling off part of a saltwater bay on the coastal Netherlands. In the process, natural water currents were interrupted, resulting in a cloudy, silt-filled environment. To clear...
Heterotis (Heterotis niloticus): These fish are only suitable as a juvenile for most personal aquariums because they are easily spooked and may throw itself against the tank glass in a panic. Hi-Fin banded shark (Myxocyprinus asiaticus): This fish reaches a maximum size of 4.5 feet and can...