My Kole tang has a gaping hole in its anal fin.

milesmiles902

New member
Hello everyone,

I am writing to ask a question regarding my Kole tang (Ctenochaetus strigosus). I noticed today that there is a gaping hole in the anal fin. [See Pics and Video].

Pictures:
<a href="http://s59.photobucket.com/user/flameboy2992/media/IMG_20130513_135515_833.jpg.html" target="_blank"><img src="http://i59.photobucket.com/albums/g313/flameboy2992/IMG_20130513_135515_833.jpg" border="0" alt=" photo IMG_20130513_135515_833.jpg"/></a>
Video:
http://s59.photobucket.com/user/flameboy2992/media/VID_20130513_160424_087.mp4.html


My tank size is a 75 gallon. There are 2x400w Metal Halide 20,000K, along with 2x100w actinic T12's.

The water quality:
Salinity=1.0255ppm
NO<sub>3</sub><sup>-</sup>=0-5ppm, has hit 10ppm before.
NO<sub>2</sub><sup>-</sup>=0ppm
NH<sub>3</sub>=0ppm
pH=8.2-8.3
Temperature=78°-83° F


I am not quite sure if it is a disease or maybe my other fish in the tank picked on it? Here are my fish in the aquarium:

1x Blue Hippo Tang (Paracanthurus hepatus)
2x Saddleback Clownfish ( Amphiprion polymnus)
1x Blue Chromis (Chromis cyanea)

The only fish that is a little agressive is my large saddleback, which is about the same size as the Kole. Although, the Kole tang is usually faster than the clown.

Let me know what you think. Thank you.
 
It's hard to tell for sure, but at this point I would just consider it damaged. It might be due to aggression from another fish, or he might have had an accident on one of the rocks. Now if it starts to spread or gets worse, you might have something to worry about.
 
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