Fish that live in natural waters of Hungary (rivers, lakes, channels). These species developed because of the environmental factors and they can breed by themselves.
- species settled by themselves
- species naturalized by humans
Ornamental fish in aquariums
These species got to Hungary as ornamental fish but somehow they got out into living water (thermal springs, warm-water streams, lakes) and there they bred and also interbred.
természetkalauz, magyar könyvklub. Édesvízi halak