wild common roach, captive fish in european temperate southern buh river biotope aquarium, highly adaptable

rutilus cyprinidae endemic common natural potamogeton crispus aqua behaviour biotic animal cladophora algae fishkeeping water clear clearwater coldwater underwater weed closeup wild caught gravel sand local fish tank omnivore predator decorative ecology threat fauna driftwood twig widespread led aquadesign ichthyology nano swim wildlife controlled conditions pet ecosystem organic pollution space glass refraction shallow dof roach captive european temperate southern buh river biotope aquarium highly adaptable freshwater species beginner blur aquatic pondweed vegetation planted design