I have experimented with several different type of items. The best is a cordis with j-wire but they are expensive and difficult for most to obtain. An angiocath is cheaper but the needle puts the fish at risk and insertion of a wire often punctures the catheter. I wasted a lot of them. For larger fish - rigid airline tubing or chilled flexible tubing works well. If you are trying to give medicine or vitamins, the plastic disposable pipette tips 1 cc will work.
I was working with a company to design one, but set the project aside since very very few people have expressed interest in doing this.
__________________
NOT Moved on.
|