I was thinking about getting a new fish or a new coral or two and then thought to myself, why not one fish and a few corals since I'll get a discount if I buy 3 corals together. Two will be tester acros and i also saw this brain coral but am unsure if it's a Platygyra or belongs to a different genus. It's about $21 for a 3 inch frag so it's pretty inexpensive even without the discount so even though I'm trying not to spend too much it looks like a pretty cool piece and I've never kept one before. Here's a pic of it and some screenshots of Platygyra species as well as a picture of a coral commonly mistaken for a Platygyra species (second pic). Thoughts?