I've had one each of crawfish, surgeonfish and pearl oyster so far, although I havent actually looked that hard for them. I had all but the last batch of animals maxed out so I've not been bothering much with requests, and I'm struggling to get back into it now they've raised the level cap. I've found the way they're locking content into fortune cookies pretty offputting too.
How are you getting on with the latest set of dappledots? The appearence rate seems really low, and I'm hardly catching any of the ones that do show up.