The Osmotic Eel cannot be located in a specific system in STFC since it is rewarded for completing the ‘What’s Mine is Mine’ mission
Players can now participate in the Interspecies Illnesses events in Star Trek Fleet Command (STFC). You have to team up with Dr. Phlox to find a cure for a galaxy-wide plague.
Dr. Phlox revealed that he uses a variety of creatures to complete his research to find a cure for the disease.
He discovered that a few of his creatures escaped their cages and it is now up to you to find them. One of the creatures that you have to capture is the Osmotic Eel.

On the official STFC Discord channel, several Commanders have revealed that they are struggling to locate the Osmotic Eel, and therefore, they are unable to complete the mission.
In order to find this creature, you have to complete the “What’s Mine is Mine” mission.
To complete this mission, players have to defeat 12 hostiles level 11 or higher. Once you have completed the mission, you will be rewarded with an Osmotic Eel.
It can therefore be said that the Osmotic Eel cannot be found in the galaxy, and instead, you have to complete the mission to receive it.
Once you have procured the Osmotic Eel, you have to return the creature to Dr. Phlox to earn rewards.
How to return the Osmotic Eel to Dr. Phlox
In the “Critters Galore” mission description, you will notice that you have to refine the creatures to earn rewards. However, this refinery does not function like the other refineries in STFC.
To return the creature to Dr. Phlox, you have to open your event store and select the “Interspecies Illnesses” tab.
The Osmotic Eel Exchange tab, which is in the new menu, allows you to return the creature to its rightful owner. You will receive approximately 24 000 Medical Test Results for returning the creature.
Can capture more than 1 Osmotic Eel?
Unfortunately, STFC players can only complete the quest once, which means that you will only be able to obtain 1 Osmotic Eel.
After returning the Osmotic Eel to Dr. Phlox, you will no longer be able to return the same creature to its owner.
That being said, you can capture the other missing creatures and return them to Dr. Phlox to earn rewards.
Additional missing creatures
In order to get additional Medical Test Results, you can capture the following creatures:
Creature | How to capture |
Lyssarian Desert Larvae | You have to mine in Xantoras |
Immunocytic Gel Worm | Players have to mine in Dekendi |
Pyrithian Bat | Commanders have to mine in Valakis |
Regulan Bloodworm | Complete the Runaway Cargo mission |
Loose Tribble | Complete the Otherwordly Delights mission |