5 articlesThere are various traits that you can unlock in Cell to Singularity, all of which have different effects on your generators. Among them are fishes, which are the last generators to be unlocked in the ocean.
One of the traits connected to fishes in the game is Replaceable Trait. It’s a trait in the Fish branch of the life tree that represents the evolutionary adaptation sharks have where they continuously regrow teeth.
But to take advantage of its effects, you need to unlock it first. Here’s how.
How to Get Replaceable Teeth in Cell to Singularity
You’ll find Replaceable Teeth sitting right after the Cartilaginous Skeleton upgrade in the Fish line. Its in-game description literally says sharks have teeth that grow in many rows and get replaced whenever one breaks off.
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Cell To Singularity: How To Unlock SharkJan 26, 2026Getting Replaceable Teeth boils down to one thing: meeting its requirements on the Fish path of the evolution tree.
First, you must unlock Cartilaginous Skeleton, which is the upgrade that lets fish evolve skeletons made of cartilage instead of bone.
This is the node directly before Replaceable Teeth on the fish branch.
Once you have Cartilaginous Skeleton, Replaceable Teeth becomes available as the next purchase in the tree. It costs Entropy and requires that preceding unlock.
Why Unlocking the Trait Matters
Cell to Singularity requires you to advance into the shark trophies that come after it on the tree. Without the Replaceable Teeth trait, you can’t progress to Shark trophy nodes.
After getting the trait, the next progression is to start collecting shark trophies via the Daily Reward calendar.
This can be done by logging in consecutively for 14 straight days. Upon finishing 2 weeks’ worth of log-in streak, you will get one free shark.
This will unlock various types of sharks; like the Megalodon, Hammerhead, Leopard, Great White, Tiger Shark, and the huge Whale Shark. Every shark type will have different attributes and levels of efficiencies, so make sure to check that out.
Unfortunately, many players think Replaceable Teeth requires some time-gated login or unrelated grind.
That’s just not true. The only gating mechanic for Replaceable Teeth itself is tree progression. This part only starts after you’ve unlocked sharks and are collecting each species.
READ MORE: Cell To Singularity: How To Unlock Shark
