@Kakapo The Bat Rays and White Sturgeon were signed If you're familiar with the tank, all the photos I uploaded in this set are from it. Also any idea what guitarfish species is in here?
The bat rays were signed, yes, but only in the outside part of the tank (where you can touch these rays and feed them), and just as "bat rays", not including the scientific name in the signage (for me, that's almost the same than unlabelled). The sturgeon was unlabelled during my visit, but fortunately the species is easy to recognize with it's short nose and chances by distribution, so I've found it easily. The guitarfishes here are Rhinobatos productus.