OptionalcastWhether it casts shadows.
OptionaldetailMesh resolution.
OptionalpresetStarting species id.
OptionalreceiveWhether it receives shadows.
OptionalrendererA WebGPURenderer; initialised if needed.
OptionalsceneIf given, the fish is added to it and animates whenever it renders.
OptionalseedSeed for this fish's size and colour variation.
OptionalspeciesThe species, resolved from preset plus your overrides.
OptionalspeedSwimming speed in body lengths per second (drives the tail beat).
OptionalstatesMaterial states.
Optionalturn−1 … 1: how hard it is turning (bends the body).
Options for Fish.create.