19/06/2026
You probably won't be able to spot this fish at our Aquarium, but that's for a very special reason.
Meet the yellowbanded possum wrasse, a tiny, peaceful, and highly secretive marine fish found on Indo-Pacific coral reefs. These fish grow to a maximum length of around 8 cm, which is about the same size as a matchbox.
Our possum wrasse plays a very important role in our coral lab as pest control. Our biologists work hard to grow coral fragments for our displays, and this little fish helps keep the coral happy and healthy by eating parasites. Unlike many fish species, possum wrasses have the unique ability to swim backwards. This helps them navigate the tight spaces between coral.
It might be tricky to spot our possum wrasse, but if you take a look in our coral lab on your next visit with us, you may be able to spot him swimming around!