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BiologyFound chiefly around coral reefs (Ref. 58534) and islands but extends a little further from shore than Hyporhamphus (R.) dussumieri which has a similar range (Ref. 10943). Found in schools (Ref. 9710). Feeds on zooplankton and floating matter. Eggs covered with adhesive filaments to assist in attaching to floating and benthic objects (Ref. 43448).