PlanetCatfish.com

Someone offered this on the Dutch site Marktplaats.nl I'm interested, but definately want to know beforehand what species they are. Not in the mood to buy a fish wich will eventually outgrow my tank.

Thanks! Someone already hinted to me it could be this fish. I mailed the seller he can keep it. Not interested anymore, way too big for my tank.

You can quite easily tell that it is Pterygoplichthys by the number of rays in the dorsal fin - when it's more than 8, then it's almost always a Pterygoplichthys. There are two Ancistrus species (both of them Black with white spots) and a couple of other large genera that have more than 8, but the by far most common genus with more rays is Pterygoplichthys.

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Mats