Ghost Pipefish
Alternative names: Solenostomus, False pipefish, tubemouth fish
The Ghost pipefish can be found in tropical waters of the Indian Ocean.
The ghost pipefishes are master of disguise, so it's quite hard for divers to find them. Not only they can change their color, but they can also change their shape in order to camouflage better.
An interesting fact is that they tend to spend a lot of time floating upside down, mouth pointed downwards and virtually motionless.
Even though the ghost pipefish is very similar to the pipefish and seahorse, it does not actually belong to the same family as them.