Dendrophyllia is a beautiful coral that you can request from your local fish store. It is similar to Tubastrea (suncoral) in that it needs to be fed. The main differences are that this coral's polyps are about three times the size of Tubastrea, plus these are happy to be open all day for your viewing pleasure. By comparison, Tubastrea tend to be open at night when the lights are out. Feeding it thawed mysis is all it takes, and it should be fed every couple of days. In the picture, you can see babies sprouting out around the base, a results of regular feedings.
Cyphastrea is an easy to keep LPS coral. If fish don't nip at it, each polyp opens up like a delicate flower. One type is referred to as Meteor Shower.
I've noticed these Cup Corals in my display tank, but they tend to only come in on newly shipped live rock. People that order from Tampa Bay Saltwater get LR with these little guys scattered sporadically in their order. They are filter feeders, and usually don't last too long in captivity. Note these pictured are quite small, especially when you compare them to the hitchhiker feather dusters to the right. Reef-safe
This LPS (large polyped stony coral) fascinates me day or night, as it changes its appearance during feedings. The central mouth opens and you can almost visualize teeth inside, and the brown outer band recedes as tentacles extend. After progressing well for 5 months, the Caulastrea were stung mercilessly by red mushrooms and later perished. Six months later, a new polyp formed in one of the empty skeletal sockets. (Also referred to as Candy Cane or Trumpet corals)
The structure of this LPS coral is quite recognizeable, its shape strikingly geometric. Identified as Alveopora, this is often compared to Gonipora. Alveopora only have 12 'petals' per polyp, which is half as many as the Goniopora's polyp. This is a coral better suited for the experienced hobbyist, because its demands can better be met by consistently stable water quality. Metal Halide (intense) lighting is needed.
Acanthastrea echinata (or acans for short) are quite popular, and thankfully their price has come down significantly since 2005. They are easy to care for, similar in care to any LPS coral. Feeding them directly can increase their growth rate significantly. Each polyp has its own mouth to feed. A. echinata are aggressive toward neighboring corals, so definitely leave about 6" of space to avoid losses.
Fungia, commonly called Plate Coral, is a nice coral usually placed on the substrate. Several kinds are available to hobbyists, from flat ones to ones that resemble anemones due to the long tentacles rising up from the plate (Heliofungia). The one above is between these two kinds, extending feeder tentacles upward about 1". When I was given this specimen, it was about as big and as thick as a "lifesaver" candy. I glued the hardened base to a chunk of live rock with Super Glue Gel to keep it in place. After a few months, it grew about 2.5" in diameter.
This LPS coral was identified at the LFS as Finger Lobophytum, but it really reminds me of smaller Caulastrea, commonly known as Candy Cane. I realize the color isn't close to Caulastrea, and when trying to feed this coral meaty foods it has ignored it. I've enjoyed having it in my tank as it grew quietly. The Hammer Coral to the left of it was moved before it stung the Lobo coral.
Whilst visiting Paul Whitby's reef, I couldn't help noticing this beautifully mixed Torch coral. It has two colored polpys on the same colony; not some type of spliced merging of two kinds into one spot. The green and purple tips waved gently in the flow. Watch for one like this for your own tank, as it adds nice diversity.
The Lobophyllia is one of the largest LPS corals we keep in our tanks. It has a mouth or mouths in the center of each polyp, and a massive surrounding tissue inflates allowing the coral to absorb photosynthetic energy during the lighting period. At night, you may observe how this coral seemingly transforms to filter feed and hopefully capture some larger bits of food that get too close. I'll be sure to add more images of this coral to show the various stages I've observed.