My male guppy has been crashing on the bottom and doing a bit of slight wobbling when he hovers maybe shimming from what I have read but I have never seen this so I can't say. Then suddenly he pops up and is back to courting the girls and two other boys in the tank. Its very disconcerting, I keep thinking oh no he is a goner, then the next second he is back up and doing his normal thing. Anything I can do for this guy or should I just wait it out as he has no other symptoms and seems to recover then lay back down as if he gets exhausted? Tank info, done two 25% water changes in as many days used API water conditioner. Tested water two days ago when I saw him acting oddly and also today came back as it always is so no changes aside from Nitrates going down a bit with the water changes from 10 to closer to 5. Tank has some Ramshorn snails, nine guppies including him, a few fry in the floating plants and six neons in a 55 gallon. He is the only one showing any signs of weirdness. Plants are Fontinalis moss clumps, Ambulia all over the place, and some Pennywort. Pictures, fist one is him up and with the group second is about two minutes later him on the bottom.