Handling lionfish requires special care: some of their fins are tipped with venom that make even the slightest puncture extremely painful, though not fatal. Credit: Christopher Pala/IPS

By Christopher Pala
NASSAU, The Bahamas, Feb 28 2014 (IPS)

The lionfish, with its striking russet and white stripes and huge venomous outrigger fins, wasn’t hard to spot under a coral reef in 15 feet of clear water. Nor was it a challenge to spear it.

As I approached and brought the point of my Hawaiian sling to within a foot of it, it simply looked back, utterly fearless until I pierced it and brought it back to the surface.“They’re everywhere now. It’s a doomsday scenario.” -- Pericles Maillis

Within a half-hour, we had caught four of these gorgeous one-pound fish, and the fillets made excellent eating that night.

But the arrival of a tasty, abundant and easy-to-shoot fish on the Caribbean’s much-depleted coral reefs is anything but good news. A recent scientific paper brought new detail to previous studies, showing that a year after colonising a reef, lionfish reduced the number of native fish by about half.

“They’ll eat just about anything they can swallow and almost nothing eats them,” said principal author Stephanie Green of Oregon State University. That’s why they’re so easy to catch, she explained.

However tasty they may be, only a miniscule fraction of the invaders has been removed, while their numbers continue to grow exponentially, reaching densities never seen in the Pacific, their native habitat.

This suggests the lionfish, believed to have been introduced to the Atlantic coast by aquarium lovers in the 1980s, will likely wipe out most Caribbean reef fish in a decade or two, scientists agree. As a result, many corals that depend on herbivore fish will die and eventually turn to rubble, making shorelines more vulnerable to waves just as global warming is lifting sea levels.

As he steered his boat back to shore, my host, a Bahamian lawyer of Greek descent named Pericles Maillis, balefully contemplated our catch and said, “They’re everywhere now. It’s a doomsday scenario.”

Maillis, a lifelong fisherman, conservationist and a former president of the Bahamas National Trust, has been trying to promote a commercial fishery in The Bahamas, but the fish, first spotted here in 2004, has become nearly ubiquitous since 2010. And shooting it while scuba diving is still banned.

His pessimism is not unwarranted. Scientists from the southern Caribbean are reporting seeing densities of lionfish that until a couple of years ago were only documented in The Bahamas, the fish’s jumping off point from Florida into the Caribbean.

In the Atlantic, their range now covers 3.3 million square kilometres. They can reach densities hundreds of times higher than in their native range, for reasons that remain a mystery. “Something is controlling their abundance,” says Mark Hixon of the University of Hawaii. “We’re guessing a small predator that’s absent in the Atlantic is targeting baby lions, but we have no idea what it is.”

In addition to adult little reef fish, the lionfish swallow virtually all species of bigger fish when they appear on the reef as bite-sized juveniles.

Isabelle Côté of Simon Fraser University said that today, when she surveys reefs in the Bahamas, where she does most of her research, “you can see there are a lot fewer little fish than there used to be just four years ago.”

No so for the larger predators like snappers and groupers that are the mainstay of the local fishermen’s reef catch. A stroll along Nassau’s fishing docks confirms what scientists have observed: despite the explosion in the number of lionfish, the decades-old slow decline in the numbers of large predators has not accelerated – yet.

Because they take years to mature, it will take a while for the generation of juveniles that’s being gobbled up now to fail to replace the current adults, who are too large to be lionfish prey.

At Nassau’s waterside fish market, where a “Me? Worry?” mood prevailed, fisherman Carson Colmar, 45, said he’s not seen any significant drop in his catch of reef fish and lobsters. He started spearing lionfish simply because they’re so easy and abundant. “I sell 50 a week,” he said. “I’d catch more if I could sell them.” The fillets sell for eight dollars a pound, compared to twelve dollars for grouper or snapper.

One problem is that handling lionfish requires special care: some of their fins are tipped with venom that make even the slightest puncture extremely painful, though not fatal. So local people, already taken aback by their unusual appearance, often believe that the flesh may be poisonous too, which it is not. That, fishermen complain, limits demand.

In the United States, the notion that this lethal predator could be controlled by becoming dinner for the ultimate predator, homo sapiens, has received wide coverage. Lad Akins, the founder of REEF, the Reef Environmental Education Foundation, who has been working on lionfish control for nearly a decade, noted that the commercial take of lionfish in Florida, where REEF is based, quintupled in just a year to 6.1 tonnes in 2012.

“It’s growing fast, but we don’t know yet if it’s putting a dent in the lionfish population,” says Akins, who is based in Key Largo. Scientists said the strategy of “eat them to beat them” has failed to have any overall effect and is unlikely to do so because spearing lionfish is too time-consuming to be profitable.

So far the only documented successes have come from recreational diving companies, which are literally defending their turf. Seeing how the colourful reef fish that underpin the businesses could soon be gone, they have started methodically exterminating the invaders from their regular dive sites.

In Bonaire, a diving mecca the Dutch West Indies, the first lionfish was caught in 2009, and within two years they were proliferating, according to Fadilah Ali of the University of Southampton. But some 300 volunteers were given special spears, more than 10,000 lionfish were killed and soon their density dropped in the areas favoured by divers. “Today, on a typical dive, you’ll see very few or no lionfish,” she said.

Green of Oregon State said some reefs might survive if the recreational divers go beyond the reefs favoured by their clients, which tend to have many different species but few juveniles. To protect the young fish, they would have to eliminate lionfish from shallow areas around mangroves, which serve as nurseries, she said.

Lionfish specimen in Jamaican waters. Credit: Zadie Neufville/IPS

By Desmond Brown
ST. JOHN'S, Antigua, Jul 25 2012 (IPS)

In a case of “if you can’t beat them, eat them,” Caribbean countries have embarked on a new strategy to deal with the invasive lionfish, whose voracious appetite is wiping out fish stocks from Bermuda to Barbados in what scientists believe to be the worst marine invasion in history.

Regional authorities are promoting a rather unusual solution – incorporate this “beautiful menace” into their diet.

Matt Strong, who heads the Bermuda-based environmental charity, Groundswell believes that a solution to the problem would be to incorporate lionfish into local menus and have it targeted by commercial and recreational fishermen.

“We can essentially eat them to reduce their numbers. It’s worked before — we ate the Nassau grouper in such large numbers that they no longer exist in Bermuda’s waters,” Strong said.

“Every time you are at a restaurant, grocery store or buying fish from your roadside fisherman, ask for lionfish. If we build up enough demand, the fishermen will target them,” he urged islanders.

The environment official noted that every day, authorities are getting more and more reports of lionfish on the country’s reefs.

“They are in great numbers on our deeper reef and now they are showing up inshore in the fish nursery grounds and relentlessly eating our juvenile fish,” Strong said.

“Lionfish are eating important commercial species but even more importantly, they could potentially decimate the herbivorous fish populations such as parrotfish. This is a huge problem as the herbivores keep the algae in check. Without them, the algae outcompetes the corals and the reef, as we know it, dies.”

The lionfish explosion occurred in Bahamian waters in 2010 and was described then as “a plague of biblical proportions stalking the Bahamian economy”.

Today, 97 percent of the reef fish endemic to the Bahamas have been eaten.

In 2011, the country created an annual bash to raise awareness about the lionfish. The family event, which was held Jul. 13-15 this year, saw a total of 345 lionfish being caught.

A similar event held in Dominica in July each year – the annual Dive Festival – organised by the Dominica Watersports Association, was used to appeal to citizens to assist in controlling the lionfish.

The theme for the 2012 festival was “Save the reef; eat a lionfish.”

The association’s president Simon Walsh said the festival this year “reflected that although this is a species that needs to be controlled in order to protect the dive sector and coastal fisheries, it is looked at as a sustainable food source”.

British Marine Biologist Arun Madisetti is on a mission to encourage the people of the Caribbean to put the lionfish to their diet.

“These things have no natural predator in our region,” he told IPS.

“We are never ever going to win this war, we can take on certain battles and control certain reefs but it’s a problem that is not going to go away.”

Madisetti, who now resides in Dominica (which saw its first lionfish in December 2010), was on a visit to Antigua at the invitation of the local Environmental Awareness Group to give a lecture on the lionfish.

Already, at least one player in the dive industry in Antigua has begun promoting the idea of eating the troublesome lionfish in a bid to control its fast growing population.

“We should encourage the community to eat them because they taste really good,” said Shawn Clarke, who runs a recreation dive business here.

Clarke and others who make their living from marine resources say the lionfish population has drastically increased since being first spotted here early last year.

In recent times there has been concern about the fish’s venomous nature and Clarke believe this is what has kept it from most dinner plates.

But he said “they are free of fish poisoning when prepared. Once you have people hunting and wanting to eat them we don’t have to worry about it so much because we want to get rid of them.

“If fishermen go out there and they know people are buying them they will catch them. If you don’t catch them in the next 20 years, all there will be is lionfish.”

The lionfish, which is native to the Pacific Ocean, is believed to have entered Atlantic and Caribbean waters during Hurricane Andrew in 1992 when a Florida aquarium broke. They rapidly consume small fishes on coral reefs and can produce up to 30,000 eggs every four days.

The lionfish’s arrival has sent shock waves of fear among members of the marine community in Barbados.

To date, six of the voracious feeders have been killed by divers or caught by fishermen.

“As part of our public awareness campaign, we have roped in the divers and the dive association and all the dive shops because, frankly, they are the ones that are out there the most,” said marine biologist Caroline Bissada-Gooding, whose company East Coast Conservation Organization Inc. runs the Lionfish Barbados Hotline.

“It’s in their own interest to get involved because as the lionfish population grows, the reef fish communities will shrink and that’s their livelihood at stake, so it’s really up to the divers, dive shops and fishermen to get involved.”

She said the island’s lionfish population is still small and those caught are being collected by members of the Lionfish hotline and taken to the Fisheries Division to be examined.

She too has assured the public that the lionfish are quite tasty, especially when prepared in a fillet.

“It’s very nice, like white meat, like a snapper. It’s not raw at all,” she said.

Madisetti said the lionfish invasion will impact the region’s fisheries and tourism industries and “something has to be done.”