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VI implantable fluorescence visible label is labeled with analphanumeric code, through the internal implanted mark the animal, the externally visible, used to identify individuals. Easy injection and maintain good.

Limitations of VI system:

Retrieval and recognition of a large number of manpower need  - mark

 - markers in fish body position migration produced easily

 – as time changes, the changes will make the marktransparency is difficult to identify

 - mark smaller, less the amount of information contained in

 - label is not easy to be found, so even back to catch,but had not been recorded

There are two sizes:

 - Standard (1.2 mm x 2.7 mm), shown as yellow. Orange,red, yellow or green background, black font. Each color has2500 different code.

 - size (2 mm x 5 mm), shown as orange, black font. Onlythe orange fluorescence background. Easy to read,suitable for large animal.