A genus found in Australia, New Zealand and the Red Sea with 5 species, 3 endemic to Australian waters. Body very elongate, trunk shallow; head aligned with body; snout short; opercles without longitudinal ridge; ridges on body indistinct; STR and STAR continuous; ITR and ITAR discontinuous near anal ring; LTR apparently not confluent with tail ridges; eggs brooded in enclosed pouch on underside of tail just behind anal fin; tail not prehensile; dermal flaps on body and head; dorsal fin much closer to head than tip of tail with short base; anal fin tiny, generally below rear half of dorsal fin; caudal fin small, rounded; pectoral fins present.
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