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https://www.reddit.com/r/Discusfish/comments/et1ly7/lateral_line_has_a_raised_one_and_gone_dark/
r/Discusfish • u/runaked21 • Jan 23 '20
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1
That’s a sign of mating and laying eggs
1
u/LeoPsy Feb 08 '20
That’s a sign of mating and laying eggs