Whooshh

How does the underlying system work?

The system uses patented technology involving pressure differentials. Slightly greater air pressure behind the fish propels it gently through the tube. We have a great video where our VP of engineering Jim Otten explains this in great detail!

Is there any scale loss or damage to eyes?

No. With an average pressure of 1-2 PSI experienced by the fish, independent studies have verified that there is no scale loss, damage to their eyes, or other injury caused by the system.

How high can a Whooshh system transport fish?

How high do you want to go? 700 feet or 230 meters is not a problem. Because we do not move a column of water to move the fish, there is no practical height limit. There may be time transport limits, but if so, we have not encountered such a project yet, even in systems more than 1700 feet or 515 meters long.

What size range of fish can be transported?

We have a range of Whooshh tubes to accommodate a variety of sizes. We have transported fish as small as herring and as large as sturgeon. Our current commercial offerings are focused on fish ranging in size from approximately 2 lbs (1 kg) to more than 34 pounds (15 kg).

How fast do fish move through the system?

In a typical system fish will travel between 5 and 8 meters per second.

How do you get fish in the tube?

They swim in through our Fish Faucet (false weir), gravity slide, or hand fed into the entry.

How many fish can be transported per minute?

Our standard configuration provides for consistent transport up to 40 fish per minute. Higher volumes are achievable depending on specific system configurations.

Do you need to slow fish down at the end of the system?

If the fish is exiting into open waters, we may not need a deceleration system. If exiting to a confined area, depending upon the configuration, we have a variety of deceleration designs from which to choose and that are deployed.