Depending on the changes in the current system in the Bay of Nha Trang and adjoining areas, juveniles and adolescents of deep-water fishes occur in the collection area at these shallow depths. According to T.T. Hieu, Institute of Oceanography, Nha Trang (personal communication, 2009), there are a number of deep canyons cutting into the outer shelf, which explains the capture of many relatively deep-living species. It is thus possible that G. minutus may live deeper than indicated by the actual trawling depths .
Grammonus minutus differs from the nine described Grammonus species since it exhibits the following combination of characters: fin rays in dorsal 75–76, anal 54–55, pectoral 22–23, number of vertebrae 12 + 30, interorbital 7.4% of SL. Males have already reached maturity by a length of 32 mm SL.: short and / or deep.
Behavioural data for Grammonus Minutus is currently being reviewed.
Diet information for Grammonus Minutus is currently being compiled.
Reproduction data for Grammonus Minutus is currently being compiled.
Marine; benthopelagic; depth range 70 - 119 m . Tropical; 13°N - 12°N, 109°E - 110°E Central Vietnam.
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