Raising an Eelektross, oops a wild Shiny Ampharos appears

[Greylocke]

I recently got a breather after finishing episode 15 and I got a chance to go back to the city(thank god) after beating Ciel. After going through the Devon Corps building mission where "spoilers" happened, I figured it was a time to train my current Pokemon the right way(EV reset disks ftw!!!) and maybe add a few new guys into my arsenal while things are not as tense atm(or I may be wrong). I grabbed a Tynamo from the PC and got it a preferred nature under Pokemon Psychology's aid and boom, trained it as a multi-type mixed attacker Eelektross currently at level 40-ish to 50-ish until I came across a level 75 shiny Ampharos at Malchous forest and caught it without any second thoughts, lol. I researched a bit and got a hint that it was slow bulky special attacking electric that could have an option to mega evolve, except for the mega evolution part, it was similar to Eelektross. Could you guys share your thoughts, opinions, and maybe suggestions on this situation of mine?