Fiji Post issued a set of four stamps feature the fresh water fish which found in Fiji islands on May 13, 2002. The depicted species are the Redigobius sp., Spotted flagtail, Silver-stripe Mud-skipper, Snake-head Gudgeon.
The 48 c stamp represents Redigobius fish. Redigobius sp has been observed in mid-water schooling, only in clear headwater areas. This fish is carnivorous and feeds on benthic invertebrates. There is evidence of parental care of demersal eggs.
The main threat to this endemic fish is habitat destruction brought about by the logging activities being carried out in its only known sites; and the possibility of introduced invasive species encroaching the headwaters. Excessive gravel and boulder removal are also direct threats.
Redigobius lekutu is a goby, belonging to the family Gobiidae. Members of the family Gobiidae are generally small fishes, and this species is no exception. It measures only 3.5 cm from the snout to the tip of the tail - probably smaller than the index finger of the average adult.