red line under dorsal fin on angelfish??

[PGJE]

My angelfish has a pale red line under his dorsal fin, I don't know if thats anything bad, but he never had that before, it wasn't part of his coloring. He still eats and swims around like normal, but I just want to make sure he's okay, or what i could do to help him. Here are a few pictures:

the red is right under the dorsal fin, towards the tail.

 

[PGJE]

My angelfish has a pale red line under his dorsal fin, I don't know if thats anything bad, but he never had that before, it wasn't part of his coloring. He still eats and swims around like normal, but I just want to make sure he's okay, or what i could do to help him. Here are a few pictures:

the red is right under the dorsal fin, towards the tail.

View attachment 1327726 View attachment 1327727

sorry about the duplicated pics; my computer is acting strange

 

[A201]

I don't think there is anything to worry about. Sometimes fish with a light coloration develope pink or red patches as they grow. Worst case scenario; minor abrasion.