ninespine stickleback, pungitius pungitius, tiny and vulnerable freshwater decorative wild fish is domesticated, european biotope

active adult algae animal aqua aquarium aquatic biotope clear close concept curious current decorative domesticated ecology europe european fauna fish fishkeeping free freshwater funny gasterosteidae gravel grey habitat ichthyology instinct local macro native natural nature ninespine ornamental plant protection pungitius river sand shy space species spine stickleback tank temperate threat tiny ukraine underwater vegetation vulnerable water weed widespread wild