I was picking Chubs up from floor time tonight and noticed a tiny, yet visible black bug on my hand that I'm assuming hopped off of him. I tried to pinch it between my fingertip and arm to kill it and it jumped. It resembles a gnat but without the large wings. Is this a mite, flea, or lice? I automatically thought flea since it was visible. I'm not sure where he would've gotten it from since we don't have any other indoor animals though. He does seem a bit itchy, but I figured this was normal itchiness for guinea pigs (since he's my first and I have no comparison). And if it sounds like a bug you've dealt with, how did you treat it? I've seen lots on here about kitten advantage but I can't find the reference to it on guinealynx.
Thanks in advance for the advice!