...no
An octopus also has a more rounded head (as pictured) whereas a squid generally has a more conical one. Also, squids have fins on their sides. Also, I would like to correct myself on a previous statement. Octopi have 8 arms, whereas squid have 8 arms along with their two longer tentacles.
Cuttlefish are when you cross an octopus, a squid, and the internet.
In appearance they are similar to a squid.
However, they have great camouflage and color changing ability like an octopus.
And, like the internet, they have kinky cross-dressing breeding habits.
The female cuttlefish flock to male cuttlefish who gather the largest rocks, but they secretly want the smaller nerdier cuttlefish guys. So what do the smaller males do? They dress up like chicks, suck the larger cuttlefishes dick, and blend in with the ladies just to get close to em. Then, when they see an opportunity, they show the female that they're actually a dude! Then the female is all over them like a sweet transvestite from transsexual Transylvania .