Identification Forum

19,070 topics in this forum

1. THE ULTIMATE ID THREAD! Before you post WHATS THIS? LOOK HERE! 1 2 3 4 29

   By Helfrichs Chick, October 6, 2007
   • 704 replies
   • 498.4k views
   • 
   • Tired
   • November 6, 2023
2. Thy Holy Tome of ID Sites

   By carbon-mantis, April 22, 2011
   • 6 replies
   • 32.2k views
   • 
   • Harrisonbored
   • July 3, 2018
3. Is this an Acropora crab? Photos.

   By shrimphombre, July 20, 2008
   • 23 replies
   • 35.2k views
   • 
   • lanman
   • July 30, 2008
4. mustard yellow algae

   By pilandisland, September 14, 2011
   • 21 replies
   • 29.7k views
   • 
   • Builder Anthony
   • September 17, 2011
5. Bristle Worm vs Fire Worm?

   By TonyV, December 20, 2009
   • 4 replies
   • 29.5k views
   • 
   • Bishop
   • April 16, 2011
6. strange 6 and 7 armed Starfish breeding like crazy 1 2

   By thesaleens7r, November 28, 2007
   • 26 replies
   • 23.5k views
   • 
   • H7brandi
   • January 13, 2008
7. clear white worms - bad or good?

   By kolei, November 3, 2009
   • 15 replies
   • 23.1k views
   • 
   • BlueAbyss
   • November 7, 2009
8. Black and white striped worm - what is it?

   By muji, October 6, 2005
   • 7 replies
   • 17.5k views
   • 
   • Daemonfly
   • October 9, 2005
9. White spots on glass and back of tank.

   By twenty12, March 28, 2008
   • 9 replies
   • 16.5k views
   • 
   • c est ma
   • March 29, 2008
10. Guidelines

    By Christopher Marks, January 28, 2003
    • 0 replies
    • 16.1k views
    • 
    • Christopher Marks
    • January 28, 2003
11. Red eyed crab, Remove and Kill? 1 2

    By pendergraft, January 5, 2009
    • 45 replies
    • 16k views
    • 
    • darkdrako
    • February 11, 2009
12. Saltwater Sucker Fish?

    By Mynameskenny19, August 31, 2008
    • 10 replies
    • 14.5k views
    • 
    • Mynameskenny19
    • August 31, 2008
13. Good Flatworm or BAD flatworm?

    By kayl, December 19, 2009
    • 8 replies
    • 13.7k views
    • 
    • Rick Shaw
    • December 20, 2009
14. Green Button Polyp or Aiptasia? Neither 1 2

    By eitallent, September 13, 2012
    • 28 replies
    • 13.4k views
    • 
    • eitallent
    • January 18, 2013
15. LIVE rock hitchhikers! 1 2

    By lowbread, January 23, 2010
    • 43 replies
    • 13.3k views
    • 
    • aquariumlover10
    • January 15, 2014
16. What is this stuff? White, stringy, suffocating 1 2

    By Steelen, April 22, 2015
    • 49 replies
    • 13k views
    • 
    • ackattackkk
    • July 9, 2015
17. Pest or Beneficial?

    By itznico, October 17, 2007
    • 14 replies
    • 12.7k views
    • 
    • c est ma
    • February 27, 2008
18. ACETEMINOPHORS, good guys or bad? 1 2 3 4

    By Weetabix7, October 31, 2007
    • 83 replies
    • 12.5k views
    • 
    • Weetabix7
    • September 11, 2010
19. What are these? baby snails? 1 2

    By iClown, October 22, 2011
    • 30 replies
    • 12.5k views
    • 
    • Nameless
    • November 7, 2011
20. 6 Legged starfish.

    By smarcus3, November 22, 2008
    • 24 replies
    • 11.6k views
    • 
    • smarcus3
    • November 23, 2008
21. Is this an asterina starfish and should I be worried for my coral?

    By MultipleTankSyndrome, September 26, 2018
    • 8 replies
    • 11.5k views
    • 
    • Clown79
    • September 27, 2018
22. Odd looking crab 1 2 3 4

    By bleuH2O, January 28, 2008
    • 88 replies
    • 11.2k views
    • 
    • Jo7n
    • August 18, 2009
23. Money Cowrie?

    By Arkayology, January 26, 2010
    • 11 replies
    • 11.2k views
    • 
    • RBS5
    • July 17, 2012
24. Chaeto hitchhikers 1 2

    By holy carp, June 24, 2015
    • 32 replies
    • 11.1k views
    • 
    • holy carp
    • August 6, 2015
25. POLYP OR PEST ANENOME?

    By nismo driver, January 4, 2007
    • 17 replies
    • 11.1k views
    • 
    • dshnarw
    • November 12, 2008