Skin Structure of Guppy
The cellular layers of the guppy skin consists of an epidermis, dermis, and hypodermis.
Below Picture credit : Tetra Press from the book, Aquariology, The Science of Fish Health Management – Master Volume, edited by John Gratzek and Janice Matthews.
Epidermis (Outermost layer)
The epidermis is very thin (usually of 6 to 8 cells thick) and is made up of epithelial cells, lined one above the other. These epithelial cells are continuously shed and replaced. In between the epithelial cells, are the slime cells (unicellular mucous glands) and a network of very small capillaries. These slime cells produce mucoid secretions that form the slime coat.
Below Photo credit : http://trc.ucdavis.edu/mjguinan/apc100/modules/Integument/_topics.html
Epidermis : Green color (Below)
The scales are colorless while most of the skin is translucent. The guppy color you see, comes from the color cells (chromatophores) embedded in the skin above and below the scales.
The Scales : Green Color (Below)
The dermis (middle layer) contains the scales, the scale forming cells, pigment, blood vessels, and nerves.
Dermis : Green Color (Below)
The Pigment Cells are in the Dermis : Green Arrow pointing
The hypodermis is a vascularized fatty layer between the epidermis and the muscle or bone beneath. It contains the adipose tissue and the muscle tissue and interface between the skin and the rest of the body.
Hypodermis : Green color
* Please note that the above are my personal point of views, and are written to help those who are interested in learning more about guppies. I would also like to thank those who have shared their experiences with me.
Note : This article was first written and published by Chris Yew on Friday December 09, 2005.