Thanks so much! Honestly, the bulb tail is what got me into this closed species to be honest!
The ARPG is called Dragons of Aquella and it's an ocean based closed species. Here is their website: https://www.dragonsofaquella.com/ There is a ton of info on there! There is much freedom in how you draw or write about them as well (as long as they're fish-like sea critters). The original import of this boy Caribes is this for example: https://www.paperdemon.com/app/art/view/41812
They have a discord as well, which is also their main way of communication, apart from their admin account on PaperDemon: Discord: https://discord.com/invite/xXR64e7 PD: https://www.paperdemon.com/app/u/Dragons-of-Aquella
If you need more info or you just want to chat, feel free to send me a pm
The way the gold, silver, and blue interact here is unique, they are distinct but still are softly laced together. The scale details on the main torso look like gold flecks too, which adds a little visual complexity and a lot of richness. Beautiful design!