It won’t fit that white Hydra because it’s the regular MTB frame (27.5). Pushkar says they may fit on an 80mm wide wheel but the chain may rub the tire on the last three cogs if your using a cassette. Also the Snowshoe 2XL’s are a taller tire vs a 26X4.8 tire. I’m going to test fit them on a Hydra Fat Frame so I’ll know for sure if they will work or not. My guess is they won‘t fit or the frame clearance will be too little for my liking.
Rome, there are two versions of the Hydra frame with the only difference being the width of the rear triangle. One is 148mm wide and the other is 197mm wide. You can actually buy the Hydra MTB and then just the Fat Bike rear triangle separate. Then you could swap between the two although it’s not as simple as it sounds.