I’ve noticed that Petco is really a hit or miss. It depends greatly on location. I found one close to our house that is excellent. I just talked to the aquatic specialist responsible for the marine tanks. She told me she can order anything I need, so I asked for a couple of specimens and she’ll try to get them for me (six line wrasse and pistol shrimp). Will be here next Wednesday hopefully. They have soft corals that look very good as well. Turns out she lobbied the store manager to install a proper lighting over that tank. They have several types of clowns, tangs and other fish. Anemones, few types of shrimp, great looking emerald crabs, etc.
They also stock a lot of marine equipment, which I as surprised to see. Lot’s of chemicals, too.
Contrast this with another Petco that is literally 4 miles away and that place is basically “live rock” or so they call it covered in hair algae and a few half dead marine fish. No corals, but a few miserable looking feather dusters. It’s a night and day difference.
So, I would not discount Petco entirely. Check around. Some are actually quite good. Others are a nightmare you should avoid.
. I believe its a ORA Aquacultured Marshall Island Hammer Coral (pic from live aquaria, petcos fish & coral source for reference) or maybe it's a soft coral 
