That body shape doesn't seem like a GT to me, the head profile seems off, more gently curved.
I can't see enough of the caudal fin to see the full lining, but my Blue Acara has a solid neon orange/yellow lining along her dorsal.
Obviously mine has much more vivid striping but it looked a lot like yours before it was fully settled in. I don't actually think it's a Blue Acara but I'm fairly positive it isn't a GT. It's definitely Aequidens thats for sure.
I can't see enough of the caudal fin to see the full lining, but my Blue Acara has a solid neon orange/yellow lining along her dorsal.
Obviously mine has much more vivid striping but it looked a lot like yours before it was fully settled in. I don't actually think it's a Blue Acara but I'm fairly positive it isn't a GT. It's definitely Aequidens thats for sure.