You can see what the shiny version of Carvanha, along with its evolution, Sharpedo, looks like below:
Carvanha turns from blue and red to green and teal. Meanwhile, Sharpedo turns from blue to purple.
Encountering a Shiny Carvanha is very rare, but there are ways to increase your chances. During the duration of the Water Festival 2019, you can earn a Carvanha encounter by completing the Research Task that makes you defeat a Team GO Rocket Grunt. You also have an increased chance of getting one from a 5 KM Egg, as the Water Festival also increases the chances of finding a water-type Pokemon in an Egg according to our report.
In addition to finding certain water-type Pokemon more frequently in the wild and in Eggs, Kingler and Crawdaunt will be able to learn a brand new water-type Charge Move known as Crabhammer. Raids will include more water-type Raid Bosses such as Blastoise, Vaporeon, Lapras and more. In addition, you’ll be able to fight and catch Uxie, Mesprit or Azelf in five-star raids in their respective regions, but only on August 28 from 6 to 7 p.m. local time. Plus, you’ll get twice the Candy from hatching Eggs.
The event will last from now until August 30 at 1 p.m. PDT.
Here’s an excellent infographic from GamePress to give you everything you need for the event:
- A Thousand-Year Slumber Pokemon GO Special Research Guide
- Water Festival Pokemon List for 2019
- Water Festival Research Tasks in Pokemon GO