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Binomial name: Awaous guamensis
Species: A. guamensis
Common name(s): ‘O‘opu n?kea
Other names: Bai-la,
Bengali Name: Bala mach
Habitat: Awaous guamensis is a species of goby native to the Pacific islands from Mariana to Vanuatu, New Caledonia and Fiji where it can be found in fresh, brackish and marine waters. It is available from just above sea level to mid-elevation reaches of streams.It grows in India & Bangladesh
Males can reach a length of 24.5 cm (9.6 in) SL while females only reach 16.5 cm (6.5 in). Recent work based upon morphological and genetic differences has recognized Hawaiian populations of Awaous as being distinct from Awaous guamensis. Consequently, Hawaiian Awaous are now recognized as a distinct species Awaous stamineus.
Food Value: Bengalis like this fish very much. It has very high protein. Red blood cells are absent in this fish. Bala mach curry is a palatable dish for Bengalis.