BlueLineAquaticsSC Posted October 10, 2022 Share Posted October 10, 2022 I’ve always wondered about this little line coming from the top of the gills down the fishes back, what’s it called and does it have a purpose. On all of my cichlids it starts at the top of the hill, arches up, and travels parallel to the spine. Barbs are similar except the arch down. Anyone know? Hard to get good pictures of them. Link to comment Share on other sites More sharing options...
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