stone moroko or topmouth gudgeon, common freshwater dwarf fish from east in temperate biotope aquarium, highly adaptable

adaptable adult aggressive animal aqua aquadesign aquarium aquatic asia asian biotic biotope clear closeup common curious cyprinid dangerous deathly decorative destructive dwarf east ecology enduring european fauna fish fishkeeping freshwater gobioninae gravel gudgeon harmful highly invasive local moroko nano native natural nature omnivorous parva predator pseudorasbora river rivers sand species stone swim tank temperate threat topmouth underwater unusual water weed widespread wild wildlife