My Seeming Dead Guppy Jumps To Top Of Tank And Goes Crazy......

[FWFishLover]

Hi, today i went to the store and bought some fish and added them to my 20g with a swordtail already in.
i added:
3 fancy blue guppies
2 dalmatian mollies
2 albino cories (i plan on getting 2-3 more)

anyways i got home and did a 25% water change and added 2 tablespoons of aquarium salt.
then i put the bags with the fish in to sit for 20 min.
after that i open the bags and netted the fish out (i didnt add the store's water)
so thus the fish were in the aquarium.
about 5-6 hours later i was watching my aquarium and noticed only 2 guppies so i looked around in the tank and saw it (what seemed to be) stuck to the part of the filter that sucks in water. so i took my net and scraped it off. then it swam normally unhurt and not ripped at all.
so i left my room real quick and about 1 min later when i came back it was on the filter AGAIN.
So I once again scraped it off and it swam normally again.
about 1 min. later it fell to the bottom of the tank. it looked dead (it was lying on the gravel without movement).
so then i tried to examine the gils and see if it was still breathing when all of a sudden it jumped up to the top of the tank and started swimming aroung extremely quick and was doing flips and barrel rolls as well as jumping out and in the water like a dolphin. so i was very alert and decided it was dead finally when it all of a sudden did it again.
now as i type its laying on the gravel appearing dead again then jumping up and frantically swim again and again taking 30 sec breaks in between.
i have no idea what couldve happened, my best guess is that it already had a disease at the LFS because the other fish are perfectly fine.

 

[NinjaSmurf]

You've added a lot of fish at one time, perhaps your having an ammonia spike? Also, if it was a fancy male guppy sometimes they have a hard time dealing with the filter flow or keeping away from the intake, it may be in shock, or going through death spasms... wish I could help more

 

[FWFishLover]

You've added a lot of fish at one time, perhaps your having an ammonia spike? Also, if it was a fancy male guppy sometimes they have a hard time dealing with the filter flow or keeping away from the intake, it may be in shock, or going through death spasms... wish I could help more

It Already Died I had to flush it. and yes it was a fancy male guppy.

 

[Harlequins]

I agree you have added too many fish in one hit,this will affect your water conditions,they may have been fine when tested,but they probably weren't after...

Also when acclimatising fish,just floating the fish in the bag is not enough,you need to slowly add tank water to the bag,for the fish to acclimatise to your ph etc...

Your guppy may have died through ph shock??

Also you say you added salt,corys do not do well with salt in the tank,i suggest you do a large waterchange to remove the salt.

Do you have hard water or soft water? Has far has i'm aware mollies can do without salt if you live in a hard water area.

Good luck.