wild small freshwater juvenile fish swims in typical temperate river biotope aquarium. family cyprinidae. rhodeus uyekii

fish grey swim nature cyprinidae reef underwater temperate bitterling animal rhodeus aqua weed cyprinid acheilognathinae carp behavior water aquarium clear decorative natural endemic algae footage eco closeup european fauna freshwater amarus driftwood gravel macro widespread pond wild native river fishkeeping bio plant adult europe biotope