Some of the most exotic species at the National Sea Life Centre in Birmingham could die if electricity is not restored after a power cut.
The power outage has left temperatures in the tanks at the centre at critical levels, said manager Ian Crabbe.
Supplies were cut to 8,500 businesses and homes in the city centre at 0330 GMT due to a fire in a sub station.
All but 13 properties were reconnected at around midday, but not at the centre in Brindley Place.
"There is a grave risk of animals dying," said Mr Crabbe.
Black tipped shark
He said supplies at the centre had been off since about 0100 GMT.
Emergency generators were being used but those only circulate water in the tanks, they do not have enough power to heat the main tank which holds one million litres.
He said that by 1500 GMT the water temperature in the tank was dropping at a rate of one degree an hour.
Electricity company Central Network had said supplies might be restored in the early evening but that put the fish at great risk, he said.
"If we don't get the power back on soon there is the real risk of mortalities."
He added that species like the giant Hawaiian turtle and the black tipped shark were at risk.
Gas heaters were being brought into the building to try and maintain the ambient temperature, he said.
In addition he was looking at organising a fish tank to be sent from their biology department in Dorset, but that would not have enough room to house all the fish from the centre.
A spokesman for Central Networks has said that engineers are working to reconnect supplies as quickly as possible.
http://news.bbc.co.uk/2/hi/uk_news/england/west_midlands/6186157.stm
The power outage has left temperatures in the tanks at the centre at critical levels, said manager Ian Crabbe.
Supplies were cut to 8,500 businesses and homes in the city centre at 0330 GMT due to a fire in a sub station.
All but 13 properties were reconnected at around midday, but not at the centre in Brindley Place.
"There is a grave risk of animals dying," said Mr Crabbe.
Black tipped shark
He said supplies at the centre had been off since about 0100 GMT.
Emergency generators were being used but those only circulate water in the tanks, they do not have enough power to heat the main tank which holds one million litres.
He said that by 1500 GMT the water temperature in the tank was dropping at a rate of one degree an hour.
Electricity company Central Network had said supplies might be restored in the early evening but that put the fish at great risk, he said.
"If we don't get the power back on soon there is the real risk of mortalities."
He added that species like the giant Hawaiian turtle and the black tipped shark were at risk.
Gas heaters were being brought into the building to try and maintain the ambient temperature, he said.
In addition he was looking at organising a fish tank to be sent from their biology department in Dorset, but that would not have enough room to house all the fish from the centre.
A spokesman for Central Networks has said that engineers are working to reconnect supplies as quickly as possible.
http://news.bbc.co.uk/2/hi/uk_news/england/west_midlands/6186157.stm
about those in the planning.

as long as trees don't fall
Typical news 16 Hrs ago reported can't fined an update
yes workes for me 2