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Old 08-19-2013, 12:48 PM   #1
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snail?

After all this time, out of nowhere, this morning a tiny black snail is crawling around the glass on my freshwater tank. Is this good or bad? Did it come in on a fish way back when? Dopid it bring the ich I blamed on the gourami?
Thanks.
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Old 08-19-2013, 12:54 PM   #2
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Did ypu recently buy plants for your tank?
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Old 08-19-2013, 01:04 PM   #3
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Yes, I bought some water sprite. The platies think it is salad. So is this little black snail a good thing or a bad thing?
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Old 08-19-2013, 01:18 PM   #4
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It is most likely a bladder snail. They most often come with plants, mosses, etc. They also often arrive as eggs, and it seems as though they appear from nowwhere, when the eggs hatch. They are not harmful, but they can multiply quickly and many do not like them around in any great numbers.

They sometimes will make small holes in the odd plant leaf, but for the most part they are like garbage men, eating dead plant matter, old fish food and whatever else they finds around, including algae. So they can be reasonably good cleanup crew. You just want keep an eye on the numbers, because they are very successful at making more of themselves fairly quickly. They are hermaphrodites so they do not need mates to lay viable eggs.

They will lay eggs, tiny irregular blobs of clear jelly with tinier dots in the gel, on plants, rocks, glass, etc. If you see one of these blobs and scrape it off, it prevents that lot from hatching. You can even remove them from plant leaves, by gently squeezing the leaf from both sides. Most leaves survive with little damage.

Really your choice to keep it or toss it. I don't mind a few of them around, but if I see a lot of little ones, I know eggs have hatched recently and will remove most of them just to keep numbers down.

People who keep puffers actually love these guys, and breed them, to feed the puffers. Some loaches also love to eat snails, and their keepers also let snails reproduce to feed the loaches.

Personally, I have yet to meet a snail that was so useless I would just get rid of it without a thought, but you do have to keep populations under control. Some snails, like the giant size Apple snail, will eat plants, so they are not welcome in planted tanks, but are fine in those without plants. It's more of a personal choice, to my mind.
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Old 08-19-2013, 01:27 PM   #5
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Chances are its a pond snail but, only pics can confirm fhis
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Old 08-19-2013, 01:39 PM   #6
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Just as general info, many people ID bladder snails as pond snails. They may indeed be found in a pond, but they are a different species than the common pond snails. Bladder snails do not get as large and are the most common snail to show up on plants.

Ramshorns are next most common, pond snails least common, unless the plant came from a pond or other outdoor body of water. True pond snails get quite a bit bigger than a bladder snail, have a different shape shell and are also a lot slower moving.

Bladder snails move quite fast, for snails, and can literally zip around most other species by comparison.
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