In the Indian part of the Brahmaputra river drainage, near Raidāk river, there are some small streams that pass through lush agricultural fields (often rice), with a crystal clear water, bottom covered by grey sand, fine gravel, roundish rocks and driftwood, with dense growths of marginal and aquatic vegetation [e.g. Hygrophila (possibly Hygrophila balsamica, Hygrophila corymbosa, Hygrophila difformis, Hygrophila lancea or Hygrophila polysperma), Limnophila (possibly Limnophila aquatica, Limnophila aromatica, Limnophila heterophylla, Limnophila indica, Limnophila rugosa or Limnophila sessiliflora), Ottelia (possibly Ottelia alismoides), and Rotala (possibly Rotala indica, Rotala rotundifolia, Rotala serpyllifolia or Rotala wallichii) species and mosses of the genera Vesicularia sp. or Amblystegium serpens.
In this kinds of underwater landscape, it is possible to find the extraordinary Dario dario fish, together with the Indian shrimp species Caridina babaulti.
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