This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
Tuna gills inside of the head. The fish head is lying on its back, the view is towards the mouth.
Licensing:
This image was created by Chris 73. The image is licensed under a dual license; please choose either of the two licenses below as desired. Attribution to Wikipedia or another project of the Wikimedia foundation is required for both licenses if the image is used outside of projects of the Wikimedia foundation. Attribution to me is not required.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Chris 73 / Wikimedia Commons
You are free:
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
You can use this image freely for any purpose, including commercial use, provided that you license it under one of the above licenses. My suggestion is to use the following text:
This Wikipedia and Wikimedia Commons image is from the user Chris 73 and is freely available at //commons.wikimedia.org/wiki/File:Tuna_Gills_in_Situ_01.jpg under the creative commons cc-by-sa 3.0 license.
For privacy reasons please use only "Chris 73" as author. If necessary, please translate the text in your language. For electronic use please include the links in the text as shown, for printed use please print the text as shown. If you use the image I would appreciate it if you would let me know on my talk page, but this is not required as long as you follow one of the above licenses.
Captions
Add a one-line explanation of what this file represents
GNU Free Documentation License, version 1.3 or later
MIME type
image/jpeg
checksum
17051ce285de0e853adf05051ec414fd8c1b00ef
determination method: SHA-1
data size
311,004 byte
height
954 pixel
width
1,103 pixel
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time
Thumbnail
Dimensions
User
Comment
current
04:59, 31 December 2005
1,103 × 954 (304 KB)
Chris 73
Tuna gills inside of the head. The fish head is lying on its back, the view is towards the mouth. {{User:Chris 73/License}} Category:Scombridae Category:Gills
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):