Thousands of dead fish spotted at Pasir Ris Beach. Photo: Sean Yap

More dead fish, marine life at Pasir Ris beach
By Siau Ming En, 2nd March 2015;

Following the mass fish deaths that affected farmers along the eastern Johor Straits over the weekend, other marine wildlife, including species such as Frogfish (F. Antennariidae), horseshoe crab and pufferfish (F. Tetraodontidae), have washed up on Pasir Ris beach.

The Agri-Food and Veterinary Authority (AVA) said the post-mortem results of fish samples collected from the affected farms indicated the fish had died as a result of gill damage caused by plankton, which are micro-organisms found in seawater. They can bloom or multiply quickly in a very short time, draining the seawater of oxygen.

“Laboratory tests conducted so far did not detect marine biotoxins in the fish,” it said.

Local fish farmers said the fish deaths on Saturday morning were worse than those during a similar event that happened at around the same time last year.

Mr Teh Aik Hua, who owns two fish farms in Sembawang and Pasir Ris, said he is left with only 1 per cent of his fish stock, compared with a 20 per cent survival rate last year.

“The problem is more serious this year. Even wild fish were found dead,” he added.

With the recent hot and dry weather, which is expected to stretch into this month, Mr Teh said about 40 per cent of his fish stock at the Sembawang farm has also died from the increasing salinity of the water.

Another fish farmer, who only wanted to be known as Simon, painted a similar picture. Nearly all his fish were wiped out this time, whereas last year, half of his stock had survived.

Around this time last year, there were fish deaths at 34 fish farms along the East Johor Straits and five farms along the West Johor Straits. About 160 tonnes of fish were found dead because of low levels of dissolved oxygen in the waters or a plankton bloom, or both, as well as the hot weather.

In response to queries, the AVA said fish harvested from local farms are safe for consumption.

The largest supermarket chain here, NTUC FairPrice, also assuaged consumer concerns, saying it imports fish from local farms that are accredited by the AVA, which has taken steps to ensure only live and healthy fish are being supplied.

FairPrice, which has more than 120 outlets, said some of these fish farms, including those in Pasir Ris, Changi, Lim Chu Kang and inland Kranji, have taken steps to move their harvests to other locations and increase the aeration of the water.

“As such, our supply of local fish remains unaffected,” said a FairPrice spokesperson.

Source: TODAY

Spotted-tail Frogfish (Lophiocharon trisignatus)
Pasir Ris, 28th February 2015

This Spotted-tail Frogfish was found by Sean Yap, who shared a photo on Facebook. It was one of the many casualties of yet another fish mass mortality event that may have been triggered by an algal bloom.

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Mass Marine Mortality at Pasir Ris
By Sean Yap, 28th February 2015;

For the past few years around this time of the year there have been occurrences of mass fish deaths on our northern shores. This year is no exception. Ria was here earlier as well, and has done a comprehensive blog post about the situation. I’m just posting photos of cool dead things. I know I don’t sound sad but I am, kay 😦

So Chinse New Year is over, and the food guilt finally set in so I decided to try and run to work some of the sin off. As soon as I hit the path however, my nose was immediately assaulted by a foul stench. I had seen some of my friends posting about fish deaths on Facebook, so I decided to go see for myself what the situation was like (totally not an excuse).

The first stop was a breakwater, and LO AND BEHOLD, I was greeted with a friggin mass grave.

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Source: Nature in a Concrete Jungle

Casualties include eels, pufferfish and frogfish (which I’m seeing for the first time – sad it has to be this way). Cephalopods were not spared either.

Source: Sean Yap Instagram

Some tentative identifications:
Left: Estuarine Moray Eel (Gymnothorax tile), with Striped Eeltail Catfishes (Plotosus lineatus), Kops’ Glass Perchlets (Ambassis kopsii) and Telkara Glass Perchlets (Ambassis vachellii), and possibly a Threespot Damselfish (Pomacentrus tripunctatus).
Right (Top): Cuttlefish (Sepia sp.) with Telkara Glass Perchlets.
Right (Centre): Spotted-tail Frogfish (Lophiocharon trisignatus).
Right (Bottom): Spotted Green Puffer (Tetraodon nigroviridis).