When you think of a fish, you probably think of the deep-water, deep-sea creatures of the sea.
But for some fish, the ocean is far more than a source of sustenance.
When a fish disease strikes, it’s not the fish itself that’s at risk, but a parasite that feeds on them and is able to thrive in the fish’s environment.
For many years, the parasite has been the main reason why fish in Australia die.
The disease is known as ‘pandemic’ because of its spread by contaminated food.
But scientists have discovered another, more complicated reason for why fish are dying: parasites are getting their claws in on their own species.
When fish are caught in nets and sold, they’re often farmed out to fish farms in other countries.
But when they’re caught in fish ponds in Australia, it takes a bit of sleuthing to identify the parasites, and to see how they’re able to flourish.
The parasites are caught through the gills of fish.
They’re very small, around the size of a finger.
They feed on the fish tissues and attach themselves to the fish in the same way that worms attach themselves on worms.
They then develop into fish parasites.
The only way to get rid of them is to kill the fish.
This is known in the medical community as the ‘fish trap’.
But it turns out that the parasites are more than just a catch-all term for the problem of parasites in fish.
As a result, the parasites in the ponds are much more diverse than anyone had realised.
For example, some of the parasites may be able to survive in the guts of fish, but other parasites can’t.
It’s like the world of a tiny fish.
The parasite can get in, but it’s very difficult to kill it.
And when the parasite grows to the point where it’s able to kill fish, it becomes the ‘catch-all’ name for a very specific kind of parasite.
This new knowledge is making it possible to identify and kill the parasite that is killing fish.
In this episode, we talk to experts and scientists who are looking at how the parasites work in fish, how they spread, and how to spot them and prevent them.
What do we know about the parasites that are killing fish?
Parasites in the water Parasites are microscopic creatures that live in the blood of fish and other animals.
The blood of a wild fish contains a protein called phosphatidylserine, which is also found in fish and is responsible for keeping fish alive.
But the proteins in fish are very similar to those in the human body, so they aren’t very helpful to the parasite.
Instead, they allow it to thrive and thrive.
In addition, the phosphatids in fish cells are very specific to a certain type of parasite called the hemolymphatic protozoan (HepP).
HepP is found in many kinds of bacteria, including those in humans, and it can be very helpful for the parasite to multiply.
Scientists are currently studying how the proteins inside the hemoplastys can trigger the growth of a particular type of HepC in the gut of the fish that feeds them.
This type of protozoa can be found in the intestines of fish in a number of different locations, including in the mouth of fish or the stomachs of fish that are eaten.
In one experiment, the researchers showed that HepE, which normally kills the protozo, can actually boost the growth in the HepM parasites in a way that’s similar to how the HapC parasite can kill HepD.
The HepA parasite has a similar effect.
This HepF parasite, which attacks the liver, also attacks the fish cells and stimulates the growth.
Scientists believe that HepsM, which feeds on the liver of fish like cod, may also be involved.
This may explain why the HepsC parasites seem to cause the fish to become more vulnerable to HepsA, even though the HapsA parasite is the cause of HepsB.
How the fish get the parasites?
Some fish parasites have been around for millions of years, but most have only been discovered recently.
When researchers look at the DNA of fish parasites, they find that there’s a specific genetic code for the HEPs in the liver.
This code is very similar in some fish to the code of the Heterogea parasite, the worm-like parasite found in worms.
So scientists think that the genes that make up the HsE code were passed down from the Holes in the intestine of fish as they got eaten by fish.
When HepsF or HepsE are found in a fish that eats fish, they are usually found in small, round or oval structures called hemolyspheres. This means