Is this Aptasia?

IAmGroot420

Community Member
View Badges
Joined
Jun 5, 2025
Messages
30
Reaction score
11
Location
Sourhern California (Orange County)
Rating - 0%
0   0   0
I’ve had my saltwater tank running for 8 months now and I noticed this guy randomly show up after 4 months. He’s been growing.

Is this Aptasia? If so, is it dangerous? How do I remove?
IMG_7282.jpeg
 

Subsea

7500 Club Member
View Badges
Joined
Jun 21, 2018
Messages
8,925
Reaction score
11,554
Location
Austin, Tx
Rating - 0%
0   0   0
It’s an anemone, I don’t think that is aptasia. Use white light for better identification.

Dangerous to what?

If you don’t want it, then get a toothbrush dipped in peroxide and scrub it away.

However, if it is aptasia then it’s in the rest of your tank. Get some peppermint shrimp.
 
Last edited:

Ziggy17

Valuable Member
View Badges
Joined
Jul 5, 2023
Messages
1,604
Reaction score
1,417
Location
Gotham
Rating - 0%
0   0   0
I’ve had my saltwater tank running for 8 months now and I noticed this guy randomly show up after 4 months. He’s been growing.

Is this Aptasia? If so, is it dangerous? How do I remove?
IMG_7282.jpeg
The little guy above it def looks like Aiptasia. They can spread pretty fast. You will always have to deal with them at some level. Aiptasia X kinda works, but natural predators works best.
 
OP
OP
I

IAmGroot420

Community Member
View Badges
Joined
Jun 5, 2025
Messages
30
Reaction score
11
Location
Sourhern California (Orange County)
Rating - 0%
0   0   0
It’s an anemone, I don’t think that is aptasia. Use white light for better identification.

Dangerous to what?

If you don’t want it, then get a toothbrush dipped in peroxide and scrub it away.
Thanks for the reply. Pics below with white lighting.

I read somewhere that if it’s Aptasia, they can be venomous to other coral and live stock in the aquarium.

This guy came out of nowhere and hasn’t moved at all. I wouldn’t mind it being there as long as it’s ok being with my two clown fish, a bubble tip anemone, and a couple of corals
 

Attachments

  • IMG_7285.jpeg
    IMG_7285.jpeg
    160.7 KB · Views: 24
  • IMG_7284.jpeg
    IMG_7284.jpeg
    170.7 KB · Views: 31
  • IMG_7283.jpeg
    IMG_7283.jpeg
    194.9 KB · Views: 30

Ziggy17

Valuable Member
View Badges
Joined
Jul 5, 2023
Messages
1,604
Reaction score
1,417
Location
Gotham
Rating - 0%
0   0   0
Thanks for the reply. Pics below with white lighting.

I read somewhere that if it’s Aptasia, they can be venomous to other coral and live stock in the aquarium.

This guy came out of nowhere and hasn’t moved at all. I wouldn’t mind it being there as long as it’s ok being with my two clown fish, a bubble tip anemone, and a couple of corals
That’s the one that looks like Aiptasia to me. The big one is an nem.
IMG_2794.jpeg
 

Ziggy17

Valuable Member
View Badges
Joined
Jul 5, 2023
Messages
1,604
Reaction score
1,417
Location
Gotham
Rating - 0%
0   0   0
Which predators are best to get rid of apatasia?
I have both peppermint shrimps (2) and a file fish. The shrimp can get into small spaces that the file fish can’t,but they’re nocturnal. The file fish is active during the day, so it eats any it sees while daytime patrolling.
 

Subsea

7500 Club Member
View Badges
Joined
Jun 21, 2018
Messages
8,925
Reaction score
11,554
Location
Austin, Tx
Rating - 0%
0   0   0
Which predators are best to get rid of apatasia?

Thanks for the reply. Pics below with white lighting.

I read somewhere that if it’s Aptasia, they can be venomous to other coral and live stock in the aquarium.

This guy came out of nowhere and hasn’t moved at all. I wouldn’t mind it being there as long as it’s ok being with my two clown fish, a bubble tip anemone, and a couple of corals
Aptasia are no more venomous than any other anemone that captures its food with stinging cells. However, they can easily become unsightly.

In your 20G tank, Peppermint shrimp are “fit for purpose”.

Know this, neither a file fish nor a peppermint shrimp will necessarily eat aptasia if there is ample food from feeding.

Peppermint shrimp are opportunistic scavengers.
 
Last edited:

biecacka

Valuable Member
View Badges
Joined
Jan 1, 2012
Messages
2,402
Reaction score
2,187
Location
columbus ohio
Rating - 0%
0   0   0
I never had good luck with filefish. Mine have died for various reasons but I never seen them eating aptasia. I’m thinking of nudi’s but worried about my wrasse eating them.

Corey
 

KrisReef

Last to get paid.
View Badges
Joined
May 15, 2018
Messages
22,081
Reaction score
39,129
Location
Vatican & Las Vegas Penthouse Quarters
Rating - 100%
1   0   0
The fat one looks like a mojano, and the little one is likely a pup from the large one. They don't have predators, except reefers who attack them with resolve. Break off that rock, or they will spread, and after 4 months it may already be too late.

I have these in my fish tank, and I need to throw away most of the rock, and hope they are not inside the filtration.
 

TOP 10 Trending Threads

WHAT AMOUNT OF LIVE ROCK AND SAND SHOULD BE PRIORITIZED FOR OPTIMAL BIODIVERSITY/FILTRATION?

  • 100% live rock + bagged sand

    Votes: 34 28.1%
  • 100% dry rock + 100% live sand

    Votes: 41 33.9%
  • 50/50 live/dry rock, 50/50 live/bagged sand

    Votes: 27 22.3%
  • 75% live rock, 25% live sand

    Votes: 11 9.1%
  • 25% live rock, 75% live sand

    Votes: 8 6.6%
Back
Top