Different types of fish need varying amounts of oxygen in the water. Trout and Salmon are very active fish and generally thrive best in clean rivers with a high level of dissolved oxygen. Course fish such and Chub & Carp will survive in water containing lower oxygen levels.
If a pollution incident causes the oxygen levels in a river, stream or canal to fall too low, the early warning signs will be fish at the water surface seemingly “gasping for air”. If there is a clean feeder stream coming into the main channel they may well be congregating at this point to take advantage of some much needed oxygenated water.
If you see fish “mouthing” at the surface, it is vital that you call us without delay and explain what you have seen.
We have the ability to supplement the oxygen levels in a watercourse or carry out a fish rescue. Time is of the essence and you can inform us of any such issues 24/7 on 0800 807060.
Check out our Youtube video on saving fish in distress.