Red bellied Piranhas egg?

[ToxicBunny]

Me and my BF purchased a red bellied piranha today, since getting home iv relised there is a jelly like ball with a white 'thing' in the middle, sitting on the substrate. Im not sure if this was in the bag with the piranha when we got it or if its recently been layed or pooped.

The thing is, being a complete newbie to piranhas, im not sure if this is an egg or just poopas im not sure what either look like.

Anyone got any advice? Thanks.

 

[Sancha]

My advice is to take a picture and post it.

 

[DrownedFishonFire]

first of all how big is the fish you just brought, is it the only fish in the tank?