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We are looking into the possibility of batch marking young of the year fish
30-70 mm SL with an visible implant elastomer or panjet type tattoo.
Unfortunatly we are working with a very limited budget. The panjet injector
uses cheap latex paint to inject small marks on the fins, whereas the
visible implant elastomer uses a more expensive paint that is visible under
a VI light. The panjet injectors can be quite expensive (~$500 each). Has
anyone tried using a simple hypodermic needle to inject latex pain under the
skin of very small fish? This seems like a very inexpensive way to give
very small fish a short term batch mark. Or does any one have panjet
injectors that they will not be using this summer, that we may barrow to see
how well they work. If these turn out to be a viable option for us, then I
am sure we would need to buy some of our own. Or does anyone have any other
ideas on how to efficiently mark several thousand 30-70 mm fish on a tight
budget?
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