Fish

Cuttlefish are in potential danger if the BHP desalination plant goes ahead in the Spencer Gulf. The video below is from ABC’s Catalyst program & gives insight into why the BHP desalination plant may affect Cuttlefish numbers, and, in time may even lead to their extinction.

Point Lowly, at the top of Spencer Gulf is a Cuttlefish breeding area. The extra salt pumped back into the gulf will result in higher levels of salinity, which affects growth and mortality of the Cuttlefish eggs. BHP have said that they have taken this into account. However, Oceanographer Associate Professor Jochen Kaempf has stated that the ‘dodge tide’ which happens 3-5 times a month has the ability to stir up & move the toxic sludge resulting from salt dumping further into the Cuttlefish breeding environment.

These are highly intelligent, unique and amazing creatures that need to be protected, so please watch the video & if you would like to find out more about the desalination plant, download the BHP report below.

Download the BHP Billiton Marine Environment Report Here

Dilution Model

Dilution Model which shows where the salt will travel, according to BHP’s report

Here’s some information about Cuttlefish courtesy Wikipedia

Cow fish

The cow fish is a type of boxfish and are quite rigid. They are generally found on rocky reefs. We have about  20 species in Australia.

Fish are sometimes stranded alive in pools on outgoing tides, but usually they are dead, and a rare feast for seabirds. You might occasionally also find freshwater species on metropolitan beaches following rains that have washed fish, such as European carp, out of the Torrens.

Porcupine fish

Porcupine fish (a.k.a. balloon fish, puffer fish) Diodon sp

Best not to step on a dead, dried porcupine fish! It has nasty, long sharp spines. In a live fish the spines provide defence against predators, as does its ability to inflate its body, making the spines stick out – like an echidna in defensive mode. These fish are not built for speed.

 

 

 

Toad Fish Tetractenos

Toadfish – don’t eat!

These fish grow to about 15 cm (this one was about full size) and are common in shallow water in southern Australia. Like other members of this family, toadies are poisonous.

 

 

 

 

 

Short-headed Lamprey (a.k.a. Australian Lamprey) Mordacia mordax

Lamprey

Looking like an eel, these fish grow to about 50cm in length and move from marine to fresh water to breed. In the sea they parasitise other fish. Most fish have jaws, but Lampreys are blood sucking and have a round funnel-like mouth with many small sharp teeth.

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