The clear goldfish allows
observers to see the tiny fish's beating heart, which allows
scientists to observe living creatures and reduces the numbers of
"You can see a live heart and other organs
because the scales
and skin have no pigments," said Yukata Tamaru, Mie
University associate professor, in a statement to the AFP.
"You don't have to cut it open. You can see a tiny brain above
the goldfish's black eyes. Having a pale colour is a
disadvantage for goldfish in an aquarium but it's good to see how
organs sit in a body three-dimensionally."
could live up to 20 years and can grow up to 10 inches in length.
Researchers can view the fish as it grows from a speck up to a
five-pound goldfish later in life.
Japanese researchers from
the Institute for Amphibian Biology of Hiroshima University are
expected to begin mass producing see-through frogs sometime in 2010,
with the estimated price near $110.
Human rights experts
around the world have voiced concern regarding the overall lack of
other options aside from dissections, which was one of the leading
reasons behind similar research.