I wonder if fish figured out to avoid them.

Is that something on another note?

Something definitely to go a lot.

Yeah, look at that.

Something definitely to go.

That that looks, that looks like a bite.

So it's something to go that definitely very violent.

Knock on the line on It looks almost like something with parents because they do that.

And that looks very like the signature off a puffer fish.

Just that very powerful beak.

So although no not seeing the culprit is, it's left ovary Clear signature.

Oh, there we go.

He's running.

Is she coming this way with it?

It's coming this way with it.

It's coming this way.

I think I should wind down.

This is good.

Yes, yes, yes, yes, yes, yes, yes, yes, and it's off.

Um, it's a dilemma.

How long do you let it run the snags down here on dhe If I let something take too long when it's moving around, it's just rattling snake.

So it's still the exact science running best guys running away from this night.

That was a bigger fish, bigger fish, but it spat the bait This is the frustrating thing.

Once it's gone, you never know what it was.

Oh, here we go.

There's something on my own.

Just let it go.

Close that, And that's good, right?

That's a good fish.

This is good.

This is good.

Just get in the net.

It's a marine species.

It's got that big dorsal fin, but it's got those little Finland's on both the top on the lower side of the body.

You don't have to be an engineer to look at that and go, Yeah, that's a pretty fast fish in the oceans, where the water tends to be clear on where there's nowhere to hide.

It does tend to be about speed.

If you're a predator, it's about being up to chase down your prey.

If you're crayfish is about being able to move fast and get out the way.

So it's like an arms race.

Everything is trying to get faster and faster.

Queen Fish spend limited time in histories so they will have little contact with cane toads.

Nice to catch.

It's not what I'm after, but it gives a bit more of a picture of this place.

I'm beginning to wonder whether the cane toads have gotten into the barrel.

Mandy before I can.

The tide has risen up into the mangroves and the fish have dispersed.

Any fishing will have to be fools with four hours away from the nearest town.

So we make camp on the island, Thomas and Steve and tell me how the cane toad invasion unfolded around here.

Does anybody know how they managed to cross the the salt water to get to the islands?

Nice one.

It's quite incredible.

Noble, smart, very intelligence, I think, to come all the way across the country to hear there's got something Thomas knows of a place where big barrel Monday were caught before the cane toads took over.

But all they still bad.

I'm eager to find out if this iconic predator has managed to survive.

This is a shallow cut off branch of a river.

Toxic contact is guaranteed.

Cane toads are dependent on fresh water.

Became Toto have to come here.

So anything in the water specifically the barrel Monday they are going to come into contact with the cane toad.

If Barrow Mandy can survive living side by side with cane toads, it would be a positive sign for the future of Fitzroy and any other river in the toads part A little sandy bank.

Just Dad?

Yeah.

Deepwater.

How a lot of this.

You can't really get to the water.

Yeah, it's gonna be Kevin Tow.

Careful where you walk him says this is Dusty.

What?

But a sand here with access to lots of snakes Looks like good water for Baron Monday.

But there's evidence of another top predator being here too.

That's a quote.

A scout?

I wonder if this croc was a casualty of a cane toad.

There's evidence of a live one too.

Is that a slide there?

D that's actually like lightning.

Be careful.

Very of the water.

While I cast for a barrel Monday, Thomas keeps an eye on everything around us.

Yes, this is a good fish.

Good fish.

It's nice to see them, John.

But when they jumped us a chance to spit the hooks you wanna turn?

If it's going away, distressed fish will attract the attention of any crocodiles nearby.

I've gotta land and fast Keep it away from the snags.

Keep working snacks.

There we go.

Rushes in shallow water, get its head pointing this way.

Let's head this way.

Finally, a barrel Monday covers.

So it's fish 38 inches long.

It's a least six years old.

There we go.

What is particularly interesting right now is that this fish would have completed its life cycle.

Until now.

During the time of the cane toad invasion, this migratory baron Monday would have had more opportunity another fish to be impacted by the deadly cane toads.