Posts Tagged ‘aquariums’

Nature Ramble

Not so much of a ‘ramble’ today, more of a sit and watch.

One of the projects during my life was aquariums. I loved to sit and watch the fish at night, much better than some TV programmes, better actors too.

Just posting a few video clips from YouTube showing off some of the more unusual species.

Oscars

Plecostomus

African cichlids

Emperor Shark

Black Ghost knifefish

Redtail Shark

Bala sharks

Just a few different species. My personal favourite is the redtail shark, a stunningly beautiful fish.

You’ll notice, no goldfish, no guppies… Hate these fish, man-made aberrations.

Sunday Nature Ramble

This week our ramble takes us to the sea. Coral reefs, in particular.

A pest previously found only in aquariums and reef projects has migrated to the wild. How? Did man have a hand in the migration of this nasty?

Nasty aquarium pest found in the wild

The flatworms take small bites out of the coral tissue and lay eggs directly onto its surface (Source: Marc Levenson)

A coral-eating flatworm that is a notorious pest in aquariums has for the first time been found in the wild – on Australia’s Great Barrier Reef.

The find is reported today in the journal PLOS ONE.

The flatworm, Amakusaplana acroporae, is a voracious predator of Acropora coral, and is capable of killing off entire colonies of the reef-forming coral.

“They take small bites of the coral tissue and also lay eggs directly onto the coral and when those eggs hatch then you’ve got 20 new worms that are also eating the coral,” says marine biologist Jessica Stella, of James Cook University in Townsville.

She says for the past 10 years the worm has plagued aquariums and reef restoration projects but has never before been found in the wild.

The worm is only about a centimetre long and almost transparent, which could be one reason why it’s been so hard to find, says Stella.

“They are so well camouflaged against their coral host,” she says. “When it’s laying on a coral host you can hardly see it.”

But now, with the help of Dr Kate Rawlinson of Dalhousie University in Canada, Stella has found the worm on Acropora coral taken from Lizard Island on the Great Barrier Reef.

Source: ABC Science Read more

Amakusaplana acroporae

Image:ReefNews

Recycle Water

Pet Fish

I had a large community aquarium

.

Many families, at some stage, have an aquarium for the kids to care for and marvel at the fish that live within.

I did, my kids loved watching the fish swimming around their tropical tank. The fish would have been disposed of responsibly on my separation had my ex not flushed them all down the toilet before I could attend to the matter and move the aquariums to my new abode.

People don’t realise the dangers of releasing fish into the wild when the kids grow up and/or get bored with them.

Warning against freeing pet fish

Guppies could establish populations even when no males were present

The release of a single female pet fish into the wild can generate entire new populations, even with no males present, according to new research.

A new study has revealed how the guppy’s ability to keep on reproducing has earned the fish its reputation as one of the world’s most invasive fish.

St Andrews University biologists, who made the discovery, are now warning pet owners against releasing the fish.

“Seemingly harmless activities such as a child freeing a few pet fish or a concerned householder using guppies to control mosquitoes, can ultimately contribute to the reduction of biodiversity in freshwater habitats across the world.”

The popular ornamental guppy, whose native home is Trinidad and the north-eastern fringe of South America, is now present in more than 70 countries worldwide.

Source: BBC News Read more.

So if you have fish, or plan to get an aquarium, think about their disposal seriously, because this is just another way that man has an adverse effect on natural habitats.

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