While there are plenty of videos about cichlids on YouTube, it's often difficult to find many that are both well produced and include commentary about the fish, etc. Furthermore, there aren't a large number of YouTube channels dedicated exclusively to the aquarium hobby, specifically the livestock. However, one that I found which is well done is Fincasters.
Created and run by John Carlin, the Fincaster content is great quality and quite informative. John offers a variety of videos that focus on individual cichlid species that any cichlidophile should find very interesting. In fact, I interviewed John back in 2016, where he talked about his videos, their production, etc. I encourage you to visit his YouTube channel or his website of the same name.
The Cichlid Room Companion
Tropical Fish Hobbyist
American Cichlid Assoc.
African Cichlid Hub