I don't disagree with this, but I feel like it's worth mentioning that the Pokedex might not be a good source to suggest that it's based more on blobfish than newts. Given that Clodsire much like the ribs of the ribbed newt, I feel like that alone is enough to suggest that it's more based on that than blobfish. Also... Clodsire has feet and arms, fish do not. There are amphibious fish - one of them being the mudskipper, which Wooper may be based on - but given that Quagsire and Clodsire straight up have arms and legs and no fins (save for the small dorsal fin) leads me to believe that they're not really fish and are more based on salamanders.
I'd also like to point out that Quagsire and Wooper's classification as "water fish pokemon" is ridiculous... fish kind of implies water. Maybe it's some sort of clerical error from translation?