A SRD or super red dragon and magma flowerhorn is just what the sellers want to call a zz flowerhorn. Their traits are zz flowerhorn traits. They looked at the fish and said the super red dragon is super red, so they called it a super red dragon for hype. The magma's red looks like magma or lava in the flowerhorn's design and colors, so they called it a magma flowerhorn for hype. They have been essentially the same traits that classifies them as Zhen Zhou flowerhorns.
Which one would I choose? I'm leaning towards the magma... But his long body in that pic bothers me... I would need to compare them equally. The first pic is so undefined, and the angle is different. So that will skew my judgment. I need a better pic of the first one to give you a definitive answer. Just judging from the pic you can see he has a better body shape and flowerline than the magma. I'm sure the first one looks a lot better than the pic shows. There is no way he has almost no pearling and just a plain white base. If he does I would easily pick the magma. I'm sure you won't be disapointed with either.