Why fish die in the aquarium – 7 most common causes

This is one of the most common and frustrating questions for beginners.

 In most cases, the problem is caused by errors at startup:

https://spotmeup.pl/blog/zwierzeta-20/jak-załozyc-ozdobne-akwarium-słodkowodne-507

1. No nitrogen cycle

The most common reason for fish death.

2. Poor water quality

• marriage swapped
• too many fish

3. Overfeeding

Food leftovers spoil the water

4. Bad selection of fish

 check the atlas:

https://spotmeup.pl/blog/zwierzeta-20/atlas-ryb-słodkowodnych-akwariowych-510

5. Stress

• bad conditions
• aggressive fish

6. No filtration

 key topic:

 https://spotmeup.pl/blog/zwierzeta-20/filtracja-w-akwarium-764

7. Sudden changes

• temperature
• water parameters

How to prevent this?

• patience
• regularity
• observation