The bluegrey carpet shark (Brachaelurus colcloughi), also known as Colclough's shark, isn’t a common shark so I guess that should make me feel better about not knowing about its existence.
The bluegrey is endemic to the shallow waters of northeast Australia. While in New Zealand, if I get up to Australia, I will see if I can find one while diving and profusely apologize.
“I’m sorry, bluegrey! Have a bony fish as a peace offering!”
They’re rather unknown, and rarely seen, so the odds are not in my favor.
These sharks are pretty for a carpet shark. It has two little eyes on top of a flat head, and on the bottom of said head is a small mouth with little barbels (kind of like a nurse shark). These carpet sharks aren’t big, reaching only 30 in (76 cm) in length. However, their most distinctive feature is their changing color pattern!
Very little is known about the biology of these sharks, except that they are ovoviviparous and have an average of eight pups in a litter. Their favorite delicacies include benthic invertebrates and, surprise, bony fish. However, they don’t munch on these until the nighttime- during the day, they’re resting in crevices. Usually they prefer sea grass beds or rocky substrates.
These guys do something pretty cool when they’re taken out of the water: they close their eyes! Like the blind shark, it will close its lower eyelids (which is what gave the blind shark its name in the first place).
The IUCN has assessed these sharks as “Vulnerable,” due to its small home range. They aren’t heavily fished for, but the aquarium trade does seem to like these little guys.
Have you ever heard of this shark?