Prehistoric fish and where to find them

Fossilised fish

Image: Shutterstock
A fossilised fish

Forget witches, wizards and suitcases full of fantastic beasts, the real world conjures up creatures so weird and wonderful they make your jaw drop. It’s from the oceans that the strangest of beings emerge, slimy and dripping; creatures that time forgot.

We’re talking prehistoric fish – swimmers that should be fossils. Here are some of the oddest and oldest fish ever found.

Coelacanth

Image: Everything dinosaur Fearsome but thick

Image: Everything dinosaur
Fearsome but thick

For a long time the Coelacanth was thought to be extinct 66 million years ago, but then in 1938 a fisherman caught one off the coast of South Africa. Thought to be the sole surviving member of a species dating back 400 million years, more recent studies have shown that the coelacanth has many more relatives than scientists realised.

A true living fossil this fish measures 2 metres in length and is a predator that lives in the deeps surviving off smaller fish and even sharks.

Considered critically endangered, the Coelacanth is armour plated and has a mouthful of sharp teeth, but for all its fearsome appearance, this is a fish of very little brain; its brain space being made up of 98.5% fat.

Alligator Gar

Alligator gar

Image: Flickr / FWC Fish and Wildlife Research Institute
We’re not sure this alligator gar would fit on your plate

The 100 million year old Alligator Gar species can weigh in at a very substantial 300lbs, and it’s not for nothing that it’s called an alligator.

With its razor sharp teeth, jaws like a car crusher and a naturally aggressive personality, you’d want to be wearing reinforced waders if you ever landed one of these.

Found in the waterways of Texas and Florida, the locals say the Alligator Gar is good eating. We think we’ll take their word for it.

Sawfish

Image: Sawfish conservation society Their saw is more sensitive than it looks

Image: Sawfish conservation society
Their saw is more sensitive than it looks

A creature with its origins in the Eocene 56 million years ago, all species of sawfish are today classified as either endangered or critically endangered.

The sawfish is notable for its long spiny saw or ‘rostrum’, but what looks like a dangerous offensive weapon is also a very clever food-detecting device which, because it’s covered in thousands of tiny sensors, enables the sawfish to detect the movement of prey in the water.

Mind you, you wouldn’t want to get on the wrong side of a sawfish – a relative of the shark, this fish grows to 7 metres in length and will attack if provoked.

Frilled shark

Image: Sharksider Deep sea dwelling

Image: Sharksider
Deep sea dwelling

One bite from the frilled shark with its 300 teeth spread over 25 rows, and it’s game over for prey. One of the oddest looking fish we’ve ever seen, this denizen of the deep lives between 1000 and 5000 feet below the ocean waves.

Imagine how surprised commercial fishermen were when they caught one in waters off the coast of south eastern Victoria, Australia. At the time the fish, which evolved into its current form 80 million years ago, was thought to be the first live specimen ever seen. But in 2007, one was captured and transferred to a marine park in Japan, where it was filmed in captivity, though sadly it died within hours.

According to the Daily Mirror, a spokesman for the local fishing association commented that the catch was “Good for dentists, but it is a freaky thing. I don’t think you would want to show it to little children before they went to bed.”

Sturgeon

Image: Trout Unlimited An endangered sturgeon

Image: Trout Unlimited (under cc licence
An endangered sturgeon

Anyone for caviar? A prehistoric fish hailing from the the Triassic period, 248 – 208 million years ago, perhaps we should have spent more time preserving the sturgeon rather than harvesting it for its eggs.

Thanks to pollution and overfishing, Sturgeon are now more endangered than any other species of fish. Large specimens are rare, though if you were to find one, it could be quite big – the largest ever catch was made in 1827, a female measuring 24 feet.

But unless something is done to protect sturgeon from the poachers, the fish is doomed in Europe. Our advice – stick to eating lumpfish caviar with your Champagne.

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