Fighter fish is a luxury type, each one costs 20 SAR. Instructions: 1- You shouldn't change the water too often. Every three days, drain half the water and add half new. 2- It's not expensive and doesn't need a filter or oxygen, meaning you can keep it in a cup. 3- Feeding: one day yes, two days no. 4- If you take care of it, it will live a long time. No delivery available.