What are they?

[thesoul2008]

I walked into my fish room tonight and for the first time ever i saw what i think are snails there are literally hundreds of them up against the glass they are quite small the only thing i can tell you it they are brown and have a twirly shell.how
what do you think they are?
how do they multiply?
how big do they get?

 

[Lupin]

Malaysian trumpet snails. Considering the time you saw them, MTS are nocturnal by nature and will not appear during the day remaining buried underground.

 

[jackiomy]

They are very cool. they eat any leftover food in my tanks. I love having them. They come out to eat en mass and then all disappear leaving my sand looking great.

 

[feiyang]

half inch is the biggest I saw.

 

[deeleywoman]

mine don't hide; i see them all the time

 

[kj5kb]

they are brown and have a twirly shell.how
what do you think they are?
how do they multiply?
how big do they get?

Yep, probably MTS.
They live in the sand/gravel and bear live young. They get about 1" long max, usually about 3/4".

 

[feiyang]

Good if you can take a pic, so people don't have to guess.

 

[thesoul2008]

was looking on the net at some pictures thats them for sure i have no idea how i got them but it sounds like a good thing i do just freaked me out as i have never seen them in there before and i have not got a new fish or plant in months....