they are blue, powder blue to be precise.
a powder blue tang is a saltwater fish, it is also known as a powder blue surgeon fish. if you have seen Finding Nemo, this fish is the same thing as Dori. Actually dori is called a hippo or blue tang, and is not at all the same as a powder blue tang.
no
Some fish do, and some fish do not. Parrot Fish, Surgeon Fish, Blue Tangs would eat Kelp. Sharks would not. Basically fish that are Herbivores (plant eaters) would eat Kelp. Carnivores would not.
Coral
olso
Sturgeon
$99
indeed
There are many surgeon fish, angels, and blennies that make their home off the coast of Hawaii. The most popular two are the Yellow Tang, and the Blue Hippo Tang
Yes.
a surgeon
Yes, you can.