narrow-clawed crayfish crawl on sand gravel substrate with claws, eat detritus and algae in planted biotope aquarium, wild caught

antenna appendage aquaculture aquadesign astacidae astacus behaviour biodiversity captive clearwater closeup conditions controlled crayfish crustacean cultivation danube decapod destructive driftwood ecology ecosystem edible environment exoskeleton fauna free habitat hardscape harmful instinct leptodactylus molt nature necrophage nocturnal omnivore organic periopod pollution predator rostrum sandbed space tasty telson temperate threat turkish underwater unusual vegetation water weed widespread wildlife