Pokemon-go – Can Shadow Pokémon be Shiny in Pokémon Go

Prior to March 22, there were no shiny Pokemon in the game. After this update, it was possible to catch a Shiny Magikarp, which can could later be evolved into a Shiny Gyarados. It was first reported by users on the Sylph Road Reddit, then confirmed via photographic evidence.

Since then, other Shiny Pokemon have been included in the game. Here is the current list:

• Pikachu
• Raichu
• Magikarp
• Gyarados
• Sableye
• Shuppet
• Banette
• Duskull
• Dusclops
• Mawile
• Absol
• Snorunt
• Swablu
• Altaria

Not really, no. The only Pokemon that would be considered to be 'only hatched from an egg' are the region-restricted Pokemon. But, even then, if you were to travel to one of those countries, you could of course catch those as well. The region-restricted Pokemon can be seen here: What are the regional Pokemon?

Edit: I feel it is important to add that this is still a pretty hotly debated fact. There was a survey done which claims to conclude that out of approximately 40,000 hatched eggs, none of the Pokemon were region-locked Pokemon. However, there are some people who claim (with evidence) that they have hatched region locked Pokemon. Some of these people even claim to have spoken to the person who created the aforementioned survey, only to have that person dismiss their claims as lies or 'hacking'.

So, right now, I am leaning towards that it IS possible to hatch region-locked Pokemon, however, there is yet to be 100% conclusive evidence either way. You can see some of the threads on Reddit where users have made claims for both sides.

Edit 2: Just to be clear, the answer to the actual question at hand here still appears to be no, the edit above is just some additional information, some of which may be a bit beyond the scope of this question.