Can Shiny Mega Steelix be caught in Pokemon GO?

One of Pokemon GO's more recent Mega Evolutions, Mega Steelix, has made its rounds as a Mega Raid boss occasionally.

208 - Shiny [Steelix] Mega Steelix (Male).png - Generation 7 - QR Codes - Project Pokemon Forums

Mega Steelix Raid Guide. Top non shadow, non mega counters via pokebattler.com : r/TheSilphRoad

Dragonspiral Descent Event Special Service - Pokemon GO Service

Find many great new & used options and get the best deals for MEGA Steelix EX SHINY ULTRA RARE 68/114 Pokemon TCG XY Steam Siege Holo NM 2016 at the

MEGA Steelix EX SHINY ULTRA RARE 68/114 Pokemon TCG XY Steam Siege Holo NM 2016

HOW TO FIND SHINY ONIX EASILY IN POKÉMON GO!! (Shiny Steelix Evolution)

Mega Steelix (Pokémon GO): Stats, Moves, Counters, Evolution

Pokemon Go Mega Steelix Raid Guide

Gear up for Steel-type Ultra Beasts, Mega Aggron, and Togedemaru with a new event–Test Your Mettle! – Pokémon GO

How to get a Metal Coat in Pokemon Go - Dexerto

Pre-sale]1/20 Scale World Figure [UU] - Mega Steelix - AliExpress

Pokémon Go Wooper Community Day guide - Polygon

Steelix Pokémon: How to Catch, Moves, Pokedex & More