Identification. The Pencil Weed Whiting is a small, slender, green to brown fish with a long snout. Females have a white-margined spot on the caudal fin. Males have two blue lines on the sides of the body. Habitat. The Pencil Weed Whiting occurs in algae-covered rocky reefs in coastal waters at depths between 1 m and 20 m. Size Range. The species grows to 14 cm in total length. https://australian.museum/learn/animals/fishes/pencil-weed-whiting-siphonognathus-beddomei/ Mark McGrouther, Updated 30/08/19 Note: Look for them amongst similiarly coloured weed. Pic is of a juvenile. Note the false 'eye' on the tail.