CUPID council officials are to help the love life of Marsden’s trout.
They are planning to construct a “fish pass” on the River Colne – to help fish find true love.
The pass, which would be the first in Kirklees, would enable the trout to bypass a fast-flowing weir and reach calmer waters where they can spawn.
It is a move being backed by the Environment Agency, who have helped with similar projects in other parts of the country.
Trout are now returning to the River Colne in greater numbers and it is hoped the pass scheme will see the numbers grow even more.
The fish pass works by slowing the flow of water to a speed which brown trout can swim upstream against.
The trout migrate upstream to spawn in the clean, flowing water which will be above the newly-constructed pass.
The pass will be on the weir near to Union Bridge which carries Church Lane over the River Colne in the Marsden Conservation Area.
Numbers of brown trout have been increasing around Marsden with the improvement in water quality in recent years.
A council spokesman said: “The many weirs on the River Colne slow down this recovery as fish cannot move freely along the river and make the best use of their habitat for feeding, spawning and shelter.
“The fish passes enable them to swim up river easily.
“They also mean that fish can avoid pollution incidents by moving upstream”.
The work to improve the river environment has been included in the current scheme to replace Union Bridge.
The work is being done in a partnership between Kirklees Council and the Environment Agency.
The existing bridge has had weight restrictions since 2004 and is currently being replaced.
Great care will be taken to ensure that the fish pass is in keeping with its surroundings.
When the pass is completed an information board will be installed giving information on how the pass works and the species which may benefit from it.
An Environment Agency spokesman said: “Fish passage problems can occur at almost any site where the water level difference between upstream and downstream of the structure is greater than about 0.5m.
“Large fish such as adult salmon can ascend structures where the water velocity may be over 5m/sec, since the maximum swimming speed and endurance of a fish normally increases with increasing length of the fish.
“But small fish such as first year returning sea trout of only 0.3m in length may have difficulty in ascending jets of water at more than 3.5m/sec.
“A fish pass can be designed to be technically suitable for fish to use but if the fish cannot find the pass it will not be very effective.
“Therefore each fish pass design must be suitable for the fish species and size available and also allow the fish to find the fish pass. “It should generally be positioned at the natural point where fish congregate”.