Only recently, a new species of see-through fish has been discovered by researchers studying the biodiversity of the Amazon rainforest.
By the looks of it, fish belonging to this species measure an average of 17 mm (0.66 inches) from head to tail, which is why the wildlife researchers who found and documented them argue that they are some of the smallest vertebrates known to the scientific community.
In fact, it was precisely because of its being see-through and this small that the fish went unnoticed for several decades. More so given the fact that the fish is believed to be a nocturnal creature, Mongabay informs us.
The fish was discovered in the Rio Negro, a tributary of the Amazon, and the people who found it have decided to name the species Cyanogaster noctivaga (i.e. blue-bellied night wanderer).