Yes, it looks highly realistic and detailed.



However, and this is a problem I see with many "realistic pokémon" fanart, this piece makes a debatable interpretation of Sobble's design.



Namely, the whites in Sobble's eyes in the original design are clearly sclera. Arvalis, however, interprets this as more scaly skin, similar to the one surrounding a chameleon's eyes (the decision of also giving it chameleon eyes is also iffy, imo).



If I had to point another detail I find dubious is the end of its tail; it's curly both designs alright, but the original has that little "ball" at its end, that I don't see why Arvalis couldn't translate into his design.



Now, I don't presume to be an expert on this matter, or else I'd have drew 'em all a long time ago. And I see several good choices Arvalis made when drawing his Sobble: making the base of its fin wider, giving it a hunched posture, the way its knee bends, the mouth, the nuzzle. All good choices, but the eyes hold too much weight in the whole composition (imo).



Now, anybody is free to disagree with me, we all are entitled to our own opinion, and to either listen or disregard other's opinions. Those are the aspects I think could have been done differently, and I'll stand by that conviction.



Apologies if my first comment sounded confrontational.