Have you ever tried to catch a particularly feisty or diseased fish in an aquarium that is heavily planted or full of delicate live rock? This simple, but clever fish trap will help you catch a delicate or sick fish with no damage to aquarium or the fish itself. Materials: A 2-liter bottle. Pepsi seems to work best. A tool to cut the 2-liter bottle A tool to punch holes in the bottle Zip ties. You should avoid “twisty ties” because the have metal cores. A bit of fish food that is highly favored by the fish you are attempting to capture Directions Start by cutting the top 4.5 inches off of the 2-liter bottle. Cut the screw top off the bottle to make a large enough opening for your fish to swim into. The top part should now form a funnel. Invert this funnel and insert it into the bottom portion of the bottle. Punch some holes to hold the bottle pieces together and secure with zip ties. The DIY fish trap construction is now complete. Setting the fish trap Place some food in the fish trap, and submerge it in your aquarium. If you need to sink the fish trap to the bottom, you can put a little aquarium gravel from the tank inside the trap. Just leave the fish trap in the aquarium until the fish you want to catch swims right in! Results I made one of these and it worked GREAT!!! I saved myself from buying the one I found online for $35.