Many times, new clients come to us to find out why their fish are not happy. Our degreed Aquatic Scientist conducts Bio-Assesments to evaluate sick fish and ecosystem conditions and we’ve had many success stories of sick fish that are now healthy after our services. Below are 5 factors to take into account when trying to find the problem:
- Have the fish been recently handled or transported? Handling increases fish stress, which depresses the fish immune system.
- Have the fish been overfed or underfed? Overfeeding causes cloudy water and the overgrowth of green algae in the system. Signs of underfeeding are pinched-looking heads and drawn up bellies. Fish with a large head and a thin body is usually underfed. A koi that grows less than an inch per month is underfed, overcrowded or not benefiting from regular water changes.
- Evaluate ammonia. Ammonia is the primary chemical waste product of the fish and it can accumulate in ponds and cause health problems for the fish. You can test the ammonia levels in the pond and assure a healthy pond by doing water changes to remove the offending ammonia and reduce feedings. A dead fish can decay and increase ammonias.
- Evaluate nitrite and nitrate: nitrite can build up in the pond and cause harm to the fish. A chronic high nitrite level is a common symptom of overfeeding and in other instances, a lack of calcium in the water can cause nitrites to accumulate. Nitrate, on the other hand, is not toxic to the fish on short term, however, long term high nitrate levels will cause a depressed immune system, zero reproductive capacity, and other problems.
- Evaluate and test pH to test if acidity level is normal. Asses oxygen levels, pond space, water flows, water temperature, pond obstacles, and pond cleanliness.
Make your fish happy all year round with Aeration 🙂 ask us how!
References: Dr. Erik Johnson “The twenty steps” to koi health
Pond Science LLC