invasive freshwater predator fish channel catfish hide in driftwood to hunt for prey

aggressive algae america animal aqua aquadesign aquarium aquatic barbel behaviour biotope cat catfish channel clear dangerous demonstrating design driftwood ecology eye farm farming fauna fin fish fishkeeping freshwater gravel hide hunt ictaluridae ictalurus instinct invasive juvenile line live local macro masking natural nature ornamental powerful predator prey punctatus river sand states strong tank threat underwater united voracious water widespread wild