danube crayfish female crawl gravel substrate in planted coldwater biotope aquarium, wild domesticated highly adaptable species

adaptable antenna appendage aquaculture aquadesign aquarium astacidae astacus behaviour biodiversity biotope captive claw clearwater closeup coldwater conditions controlled crawl crayfish crustacean cultivation danube decapod design destructive disorder domesticated driftwood ecology ecosystem edible environment exoskeleton fauna female freshwater gravel habitat hardscape harmful highly inhabitant instinct invasive leaf leptodactylus litter narrowclawed nature necrophage nocturnal omnivore organic pereiopod planted pollution predator river rostrum sandbed space species substrate tasty telson temperate threat turkish underwater unusual vegetation water weed widespread wild wildcaught wildlife