A deadly pet. DANGER!! The beautiful Blue Ringed Octopus - Hapalochlaena spp. - is not recommended as an inhabitant for any reef tank. Their venomous bite can cause paralysis (and asphyxiation) within mere minutes, and the animal should not be handled. If one is going to be kept, a purpose built tank with a well-sealed weighted lid is a must to keep this creature from escaping - a recommendation for all octopus, venomous or not. They are not intentionally aggressive toward humans, still care must be taken to avoid being bitten.
Rose BTA anemone are pink, but this particular strain is called a Sherman Rose BTA. People love it because of the vivid color of its tentacles.
This is a Squammipinnis anthias, usually referred to as a Lyretail anthias. Usually these fish are female, but one within a harem will turn male. Visually, it will change from orange to purple and exhibit dominance over the others. Lyretails are usually best kept in an odd numbered group, such as five or seven.
Despite being told some are easier than others to keep, I have yet to keep a Cleaner Wrasse - Labroides dimidiatus - alive for more than a few days. I have a hard time recommending this fish to other hobbyists. The main reason they are sought after is because they will clean other fish of any external parasites, picking them off the body or gills. They may even enter the mouths of larger fish to clean their teeth, so to speak.