common roach, wild freshwater fish in twig driftwood biotope european temperate river aquarium

rutilus cyprinidae invasion endemic common widespread nature silver domesticated aqua behaviour biotic animal fishkeeping water underwater weed decorative closeup fish tank local wild caught omnivore predator ecology threat fauna aquadesign wildlife controlled conditions pet ecosystem organic pollution litter algae environment ichthyology hobby recreation space explore glass refraction captive instinct natural habitat ornamental ryoboku inspiration