Thanks for the links! I didn't know Petco keep goby as well. Most beautiful fish I see .I went a few weeks ago, and saw a Mastacembelus armatus, the Spiny Yellowatail Version. Zig Zag Spiny Yellowtail Eel. Also saw a Blood Parrot Cichlid. That was at PetSmart. At PetCo, I forgot what type of tang it was, but it was pretty bland, Spotted Mandarin Goby (I remember that since it was one of the prettiest fish I‘ve seen), and even a Tessolate Eel (I remember that since then, I have never seen an eel in captivity). The rarest inverts at petco: Harlequin Shrimp, A Blue Starfish (IDK what type) and a Feather Duster (TINY TINY). I know this seems like a lot of rare stuff, but go onto their website! They have a LOT!