chinese sleeper, juvenile freshwater fish species in nature aquarium, dangerous invasive predator from temperate asia

adaptable aggression amur animal aqua aquaculture aquarium aquatic asia asian background biotope blur blurred bright chinese clear closeup colourful cosmopolitan dangerous deathly decorative destroyer east ecology endemic far fauna fish fishkeeping free freshwater glenii green grey hobby hunt invasive juvenile natural nature odontobutidae perccottus predator river rotan sleeper space species tank temperate threat underwater water widespread wild