Mushroom Wierdness ID

I guess this is an ID so forgive me if the wrong forum.

Ok tonight I looked at my mushroom and it was all swolen then about 5 mins later it was the same. Why did it do this was it agrivated or spawning? here are pics before and after

 

Mine do that when some fish food lands on them .

 

I did just feed prior to that. Why do the do that was it iritated?

 

I think it may be an eating responds.

 

cool.. it looks like a red tomato there.

 

actually not sure what is is. my buddy bought it for 15 dollars with 4 shrooms on it. So I just through it in me tank. But it is doing really well untill i noticed this. Not that its not doing good cause if this.

 

its more of an eating movement. i have 8 of them. there are also easy to cultivate

 

What do you man cultivate? like spread them? if so how?

 

look up fraging mushrooms on youtube that well get u started on the cultivating

very easy a razor blade, glass(or plate) and a small container and rr

 

They will spread on there own in time given they have the right conditions.