Bycatch. That’s the fish that fishers didn’t mean to catch but did – baby fish, species people don’t like to eat, fish no one will buy. High levels of bycatch make fishing unsustainable, not to mention it’s a huge waste. So what can be done about it? Well, that depends on the type of fishing gear being used. For fish traps (often called fish pots), I have a solution: put a hole in the corner. No, I’m not being glib. Putting vertical, rectangular holes, aka escape gaps, in opposing corners of fish traps can reduce bycatch by up to 80%, without reducing (and potentially even increasing) the value of the catch. How, you ask? Escape gaps allow the narrow-bodied and juvenile fish (including lots of herbivores) to escape, while retaining the larger, meatier fish that fishers want to catch. [For more on where and how this has been researched and implemented: bit.ly/ngblog8.]

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