nuchal hump

I have a single barred red devil cichlid housed in a 110 gallon aquarium. As seen in the first photo, taken when I got the fish 6 months ago, it has a rather large nuchal hump. The second picture is the same exact fish 6 months later: it has massively improved colors and has grown around 2...

Can carpintis get a large Nuchal Hump?If so does anyone have a pic of one with a large Nuchal Hump, or at least one with the largest Nuchal Hump you've seen?

Can a mirror be used to draw out a Nuchal Hump from a male angelfish? I was wondering because it works for Flowerhorns so I just wanted to know.

I like short body RT but I don't like how their head slopes down like this one Is it possible for me to get my male and female RT to have Nuchal Humps so they don't look like that? And would it be possible for them to have Nuchal Humps without grooming? I'm hoping to get them to look like this.

Sorry if this is a dumb question but has anyone ever heard of discus getting nuchal humps? I know it sounds weird because of the shape of discus but I'm curious so I just wanted to know.

As I said above do Jags get Nuchal humps similar to Dovii?

If I put a mirror in with a Thai Green Texas every once in a while, will it help it's nuchal hump grow?

Hello i just started keeping flowerhorns to grow and resell and train them in the meantime. A lot of people who keep flowerhorns advise me to feed a high protein diet but I'm reluctant to because I've heard high protein diets are bad for them? In order to resell them for a higher price though I...