Rendahl's messmate (Echiodon rendahli) is a pearlfish of the family Carapidae, found in the southwest Pacific Ocean around Australia and New Zealand at depths to 60m (200feet). Its length is between NaNcm (-2,147,483,648inches).The larvae has a long filament on its head which bears some resemblance to a siphonophore. These fish live within sponges.[1] The specific name honours the Swedish naturalist and artist Hialmar Rendahl who collected the specimens in the Tasman Sea which were used by Gilbert Percy Whitley to describe this species.[2]
left|thumb|200px|Juvenile Echiodon rendahli
Drawing by Dr Tony Ayling