Odd Looking Thing

[beckyaiden]

i have just set up my new fish tank and for the past week or so have had a few neons and 3 guppy 2 female and 1 male
well anyway i have just added a few more fish and last night i noticed an odd looking thing that looks a little bit like a slug it has a speckled back and fleshy coloured underneath and it moving i have just took another look and found another
does any one have any ideas of what it could be?

 

[Fishkeeper2004]

Most likely snails, if you introduce live plants into an aquarium they will become common, and they breed quickly. Try to keep on them of them by removing them daily.