Fish trap - The Planted Tank Forum
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  • 4 Post By PlantedRich
  • 2 Post By milingmiles
 
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post #1 of 6 (permalink) Old 12-31-2017, 02:19 PM Thread Starter
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Fish trap

I need to know how to build one
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post #2 of 6 (permalink) Old 12-31-2017, 02:22 PM
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2L bottle, but the top off, flip it so the "cone" is going into the body, glue/tape in place, fill with water, add bait and toss it in.
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post #3 of 6 (permalink) Old 12-31-2017, 03:30 PM
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Quote:
Originally Posted by Quagulator View Post
2L bottle, but the top off, flip it so the "cone" is going into the body, glue/tape in place, fill with water, add bait and toss it in.
Caution here!! Without holes to allow water flow through the bottle, you have a ready made death trap as the fish will quickly use any O2 and create waste. If a single fish goes in, you may get by but if the whole gang gets in, trouble! Add as many and as large holes as practical that will not let the fish escape.
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post #4 of 6 (permalink) Old 12-31-2017, 04:23 PM
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I agree with @PlantedRich. I built a similar 1L bottle trap without side holes for shrimp. It trapped both shrimp and fish. The several trapped otocinclus and pygmy cories all died within 8-10 hours due to lack of oxygen. I am not sure if the deaths were specific to cories/otos, but I was surprised how quickly they depleted oxygen and created wastes. So if you build a plastic bottle trap, you need to drill side holes to prevent unnecessary deaths.
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post #5 of 6 (permalink) Old 01-01-2018, 04:56 AM
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Also, if you have a labyrinth fish like a betta or gourami, you need to be by the tank at all times in case it goes into the trap. Labyrinth fish need to be able to breathe air at all times, you can't trap one below the water's surface. Same goes for African dwarf frogs.

Aside from the above cautions, that fish trap works great, on just about anything that fits through the hole. The exception is peacock gudgeons and other fish that hover above the substrate, you have to adjust the angle of the funnel or they'll just hover right back out.


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post #6 of 6 (permalink) Old 01-05-2018, 02:46 AM
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Bottle trap, be sure to punch lots of holes in the sides, and check it often. Take a look at this thread: https://www.plantedtank.net/forums/8-...aped-tank.html


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