Through history, exotic freshwater fish have long been revered as objects of beauty and wealth. Now aquarium hobbyists enjoy keeping exotic species as an enjoyable hobby; though some species can be difficult to care for properly in home tanks; others thrive if given adequate attention and support from aquarium hobbyists. Owning exotic fish requires considerable commitment as each species requires specific knowledge to thrive successfully, while their release into natural environments could pose threats to water ecosystems.
Invasive fishes can have devastating impacts on aquatic ecosystems by competing for resources with native aquatic wildlife and spreading diseases to humans. Furthermore, these nonnative species can alter biodiversity by breeding with indigenous populations or interbreeding.
Exotic fishes released into non-native habitats can alter the genetics of native species by hybridizing with them, and some, like Arowana nigricans or dragonfish have long been held up as symbols of courage and strength, with legends of them scaling waterfalls without fear as evidence of their bravery and dignity.
As exotic fish may survive in their natural environments, their chances are significantly decreased. To mitigate risk and avoid becoming invasive species, aquarium hobbyists should purchase their fish from reliable breeders and suppliers who employ sustainable practices - this will raise awareness of these fishes as conservation efforts and foster greater understanding about them.
