Is lateral line erosion harmful? I have cichlids in the same tank, is it something that can effect them?

What kind of catfish is this?? I got him from a donation tank at my local aquarium and the owner had called him a farlowella catfish.but when I look on google the pictures look nothing like him. Help!

He looks like a feather fin but has a solid silver stripe down his side and has black and grey spots