Style Zen Garden with Billboarding Fish Low-poly 3D Model

Description

This is a stylized 3D scene of a cozy garden corner, featuring a central curved koi pond with a concrete border, surrounded by lush grass, wooden benches, and various vegetation.
IMPORTANT GEOMETRY NOTE: For extreme optimization and performance, several elements in this scene are not full 3D geometry. They utilize the "billboarding" technique (2D planes with alpha textures that always face the camera):
Trees: All background trees are 2D planes with transparent (alpha) PNG textures.
Fish: All koi fish in the pond are 2D planes with transparent (alpha) PNG textures.
Corals/Water Plants: The red coral-like plants inside the pond are 2D planes with transparent (alpha) PNG textures.
Fully 3D Modeled Elements (Geometry):
The pond border and the pond structure itself.
The three wooden benches (metal frames and wooden slats).
The grassy terrain.
The spherical topiary bushes.
The circular island in the pond and its large planter.
The plants inside the planter (Monstera and grasses).
Use Case: This approach keeps the polygon count very low and efficient. It is ideal for game engines (Unity, Unreal), AR/VR applications, or scenes requiring fast rendering. The textures are oriented to work with billboard constraints.8