So, this is Anubis. He has a 5 gal tank and heater (preset 78 degrees F), filter (imaginarium filter for a 5gal tank, sponge over filter to reduce flow), live plants (recently had to clip the old and wilted parts due to transfer, which is why short. Also growing algae on side walls to reduce stress due to reflection), and 2 cherry shrimp. I have had him for over or around two weeks. Still surfing (heard that was normal for being in a new tank) His dorsal fin has a hook looking thing (first picture, hard to get because he moves alot when camera trying to get him) that i diddnt notice before, and a translucent stripe on the caudal fin (also first picture). I’ve been getting really into betta fish since getting him, and learning all the diseases and cures is kind of making me slightly paranoid