In order for you to play I Am Fish on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows 7 x64
Processor (CPU):
Intel Core i5-3470 (4 * 3200) or equivalent
Memory (RAM):
6 GB RAM
Graphics Card:
GeForce GTX 960 (4096 VRAM)
Storage:
12 GB available space
In order to play I Am Fish on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Windows 10 x64
Processor (CPU):
Intel Core i7-6700 (8 * 3400) or equivalent
Memory (RAM):
12 GB RAM
Graphics Card:
GeForce RTX 2060 Super (6144VRAM)
Storage:
12 GB available space