PLANS to move fish from a lake in Kirklees because of overcrowding and a reduced oxygen supply have been postponed for a second time.
The Environment Agency said it was unable to transfer the roach and perch from Wilton Park lake in Batley as it was frozen.
The fish were due to be moved to Cottingley Manor Lake in Bradford and Yeadon Tarn in Leeds.
A spokeswoman said it was hoping to reschedule the transfer shortly.
The Environment Agency said the lake at Wilton Park was overcrowded, reducing the levels of oxygen available.
It is hoped the removal of the larger fish will help younger fish develop and breed.
Fisheries officer Pete Turner said: “The move will free up space in Wilton Park and support fish populations at the other two locations.
“Yeadon Tarn suffered oxygen-related fish deaths in April due to cold weather and we're hoping the introduction of the fish from Wilton Park will help the population to recover”.
The Environment Agency said the overcrowding and reduction in oxygen levels had not caused any deaths among the population at Wilton Park.
Plans to move the fish in December were thwarted because the lake was frozen.