Is there a safe adhesive silicone to use in pond with turtles/fish?

Question

I want to use an adhesive silicone on an island area of my outdoor pond. The pond has turtles, some koi and goldfish. Is there a safe product to use that won't harm them? I'm adhering some smaller, thin rocks to a ramp to cover exposed rubber liner. I don't want reptiles/fish to get sick or die by using wrong product and need more than what usually comes in a small tube of liner repair glue.

Answer 1

Aquascape Black Fish safe

Answer 2

100 percent clear rtv  is good to go!

Answer 3

The 3M brand silicone sealant for auto glass (make sure you get the one in the red box) does an awesome job - it's what we used to build our waterfall with, and it adhered EPDM liner to rocks, liner to plastic tubs, etc., etc.

Hope this helps.