What is this? Has already reproduced once

cards98765

New Member
Maybe. But the one on the left is yellow with green dots and the one on the right is red with green dots. The two pair are similar but continue to slowly move around the tank. They are never togethor. Total of 4 heads. The red and green one would be half and inch bigger then the yellow one. Least it doesn't sound like anything dangerous. That was worrying me the most. Thanks
 
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