I had these 2 for about 1.5 years, when I bought them they look almost identical. But now they show different marking on the tentacles. My LFS didn't tell me what it was, they just said it's BTA. Can you guys help me identified what kind of BTA is this? Shot with an orange filter at the earliest time of lights with only blues on.
Kindly appreciated for your help.

Kindly appreciated for your help.

