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A shot while ago we noticed what looked like a small slug, now we have quite a few of them, they seem to multiply rather quickly. Does anybody know what they are? Good bad or indifferent? If bad how do you get rid of them?
Nudibranch. They will look like what they consume and are very specialized eaters, only eating one thing.
When there is one there are always eggs. This is most likely what you’re witnessing, the eggs hatching. They will starve out.