Identification Forum

18,626 topics in this forum

1. THE ULTIMATE ID THREAD! Before you post WHATS THIS? LOOK HERE! 1 2 3 4 27

   By Helfrichs Chick, October 6, 2007
   • 664 replies
   • 429,483 views
   • 
   • Tired
   • November 25, 2020
2. Thy Holy Tome of ID Sites

   By carbon-mantis, April 22, 2011
   • 6 replies
   • 26,568 views
   • 
   • Harrisonbored
   • July 3, 2018
3. Dinoflagellates?

   By MrMatt, 4 hours ago
   • 3 replies
   • 26 views
   • 
   • Clown79
   • 2 hours ago
4. Clove polyps or anthelia

   By Obami, 11 hours ago
   • 2 replies
   • 38 views
   • 
   • Obami
   • 4 hours ago
5. What is this flower like entity growing on the live rocks?

   By Gore15, 11 hours ago
   • 2 replies
   • 44 views
   • 
   • Tired
   • 6 hours ago
6. What are these tentacles on the rocks?

   By Gore15, Monday at 11:38 AM   

   • tentacles
   • 3 replies
   • 60 views
   • 
   • Zane W
   • 12 hours ago
7. What kind of alien is this?

   By Jessy-Ray, November 8, 2020
   • 14 replies
   • 218 views
   • 
   • Jessy-Ray
   • Wednesday at 10:34 PM
8. What is this ?coral? It appeared on the live rock I bought

   By Gore15, Monday at 11:30 AM   

   • coral
   • 6 replies
   • 95 views
   • 
   • Tired
   • Wednesday at 06:30 PM
9. Anyone know what this thing is?

   By Jerad81, Sunday at 07:21 PM
   • 7 replies
   • 75 views
   • 
   • Jerad81
   • Monday at 07:17 AM
10. Algae I.D. Needed

    By Iamdasauce, Sunday at 08:43 PM   

    • pest
    • algae
    • 0 replies
    • 22 views
    • 
    • Iamdasauce
    • Sunday at 08:43 PM
11. Unknown Coral / Possible pest

    By Reef Reece, January 16
    • 4 replies
    • 81 views
    • 
    • Reef Reece
    • Sunday at 03:11 PM
12. Invasive snail?

    By Gore15, January 16   

    • snail
    • 3 replies
    • 57 views
    • 
    • Gore15
    • Sunday at 12:32 PM
13. What is this on my hammer???

    By 1255fish, January 15
    • 2 replies
    • 49 views
    • 
    • lizzyann
    • January 17
14. Can anyone ID this mushroom type?

    By Bluereefer, January 14
    • 3 replies
    • 49 views
    • 
    • Bluereefer
    • January 15
15. Is this NPS gorgonian or PS ?

    By chathurai, January 15
    • 0 replies
    • 23 views
    • 
    • chathurai
    • January 15
16. ocellaris or percula?

    By jarviz, January 15
    • 6 replies
    • 46 views
    • 
    • Tamberav
    • January 15
17. What is this menace of a crab. Killed two Babylonia snails in a week

    By Gore15, January 11
    • 3 replies
    • 61 views
    • 
    • Gore15
    • January 12
18. Yet Another Dino ID Thread

    By sublunary, January 9
    • 3 replies
    • 55 views
    • 
    • sublunary
    • January 11
19. What dottyback?

    By Leo_ian, January 10   

    • dottyback
    • red
    • 5 replies
    • 70 views
    • 
    • Leo_ian
    • January 10
20. Spaghetti worms - harmful in quantity?

    By tzink, January 5
    • 3 replies
    • 55 views
    • 
    • Tired
    • January 10
21. What corals are these?

    By kevnick80, January 8
    • 4 replies
    • 84 views
    • 
    • kevnick80
    • January 10
22. White mist covers tank

    By Clownfish king, January 7
    • 1 reply
    • 41 views
    • 
    • debbeach13
    • January 7
23. Is this a starfish and reef safe?

    By Gore15, January 6
    • 5 replies
    • 85 views
    • 
    • Tired
    • January 6
24. ID Help Translucent Tube Colony

    By Mirror222, January 6
    • 5 replies
    • 83 views
    • 
    • Tired
    • January 6
25. Torch coral ID?

    By RoyalGramma001, January 2
    • 10 replies
    • 112 views
    • 
    • RoyalGramma001
    • January 5