deathly predator channel catfish, in european freshwater temperate biotope aquarium, fish hunting on river bottom, greeen algae

aggressive algae america animal aqua aquadesign aquarium aquatic barbel behaviour biotic biotope bottom cat catfish channel clear concept danger dangerous deathly destroyer driftwood ecology ecosystem edible european exploration farming fauna fish fishkeeping freshwater gravel greedy greeen grey habit hunting ictalurus instinct invasion invasive juvenile lips macro mouth natural nature potamogeton predator punctatus river sand states swim system tank temperate threat underwater united voracious water widespread wild