NEW YORK You can see right through this little aquarium fish from Thailand: Its skin is almost completely transparent. But when the light hits it just right, its body flickers with shimmering rainbow colors.
Scientists have figured out what makes a small see-through fish sometimes shimmer in the light. In a new study, they say the key is in the muscles of the fish from Thailand, called a ghost catfish.
The ghost catfish sometimes known as the glass catfish is a small species native to rivers in Thailand, averaging just a few inches (centimeters) long.