Fish Generator

Fish Generator builds rigged, animated fish in one click, from a clownfish or a koi to a bluefin tuna, a moray eel, a flounder lying on the sea floor or a great white shark. Pick one of 34 species presets, press Surprise for a new fish, or shape your own with sliders that rebuild the fish live.

Every fish is made from real anatomy instead of a blob: the body section of its family, thin translucent fins with bony rays between the membranes, a gill cover with its slit, a lateral line, nostrils, a mouth with lips and teeth, and eyes with a painted iris, a pupil and a clear cornea.

Species

• Fusiform swimmers: tuna, salmon, trout, bass, cod, mackerel, mahi-mahi, grouper
• Deep-bodied reef and aquarium fish: angelfish, discus, butterflyfish, tangs, piranha, bluegill, Moorish idol, clownfish, betta, lionfish, neon tetra
• Eels and long hunters: European eel, moray, barracuda, pike
• Round and fancy fish: pufferfish, oranda, fantail and comet goldfish, koi
• Flatfish and rays: flounder with both eyes on top, stingray with wing waves and a whip tail
• Sharks and bottom dwellers: great white, blacktip reef shark, channel catfish

Skin and materials

• Real overlapping scales (cycloid, ctenoid, placoid or none) as colour, normal and roughness maps
• Species patterns with crisp edges: clownfish bands, trout spots, mackerel stripes, koi patches
• Countershading, silver guanine sheen, iridescence and a wet subsurface look

Swim animation

• A looping swim cycle baked onto a real armature: eel waves, tuna tail beats, goldfish fin rowing and ray wing waves, with fin flutter
• Speed, amplitude, wavelength and forward travel are adjustable

Game ready

• Clean quad topology, one UV map with packed textures, PBR materials and vertex weights, so the fish exports to game engines as a normal skinned mesh

Requires Blender 4.2 or newer. Tested on Blender 4.2, 4.5 and 5.2 LTS.