European Conger Eel is an Engineer.
Pelican Eel is a Scientist.
Frilled Shark is a Scientist.

Thanks for the feedback, fixed.

Rough Octopus (SeaGrassDunes) - Uncommon - 8% Generalist, 10% Mutation, 2 Uses
Coelacanth (Basalt Columns) - Very Rare - 15% Engineer, 0% Mutation, 1 Use
Bluntnose Sixgill Shark (Basalt Columns) - Rare - 20% Scientist, 10% Mutation, 1 Use
Atlantic Silver Hatchetfish (DarkGlows) - Common - 8% Scientist, 14% Mutation, 1 Use
European Conger Eel (DarkGlows) - Uncommon - 12% Engineer, 16% Mutation, 1 Use
Sperm Whale (DarkGlows) - Uncommon - 12% Scientist, 18% Mutation, 1 Use
Anglerfish (DarkGlows) - Rare - 25% Engineer, 15% Mutation, 1 Use
Crowned Jellyfish (DarkGlows) - Rare - 25% Scientist, 15% Mutation, 1 Use
Pelagic Armorhead (Volcanic) - Uncommon - 20% Generalist, 0% Mutation, 1 Use
Frilled Shark (Volcanic) - Very Rare - 35% Scientist, -5% Mutation, 1 Use

Fangtooth Moray Eel is a Coral Reef spawn, not a Seagrass Dunes spawn, so dupe entry in your table

Added Oceanic Sunfish and fixed the other ones.

Indeed the game doesn't count the mutation on the fauna nets, I think its a bug.

I believe it may have some fauna we didn't found yet since I didn't found the oceanic sunfish in 3 games.

I have, but the fauna net shows the original value, where as my cloning lab shows the adjusted value. I got my values from the fauna nets, not the cloning lab. I'm missing 3 fauna from the list in my game world.

I noted that there is a fish missing:
Oceanic Sunfish - Rare - Kelp Biome
Gen 5%, -10% mutation, 1 use

Seagrass - I'm missing spider crabs and rough octopi. Everything else checks out

Kelp Forest was as you reported (minus the above)

Coral Reef - Goblin Shark is 2% mutation and Dumbo Octopus is 10% mutation

Dark Glow - Atlantic Silver is common and everything but the Giant Squid is 5% less mutation

Basaltic - Missing the shark - Pelagic is Generic and everything was 5% less mutation

Volcanic - Pelagic is Gen, Pelican is Sci, and all mutations were 5% lower

I will double check on the mutation numbers in a fresh game, but the numbers were 5% greater on the nets than the samples in the cloning lab.

I used the base values without tech, maybe you have already researched it

I'm going over your chart now with my current game to see if there's anything else. The only thing so far seems to be base mutation numbers. For Science and Engineering materials yours seem to be 5 higher than mine. Unless the reduction is applying 10% incorrectly from technology upgrades.

I have a few biomes to fully explore out, so I'll update my final list later.

Fixed it, thanks, I wrote it wrong when was formating.

The goblin shark is generalist, not scientist. As is the giant squid.