▁rounded . ▁ ▁The ▁pel vic ▁fins ▁are ▁small ▁and ▁set ▁at ▁about ▁the ▁mid point ▁of ▁the ▁fish ' s ▁length , ▁and ▁the ▁d ors al ▁and ▁anal ▁fins ▁are ▁set ▁right ▁back ▁with ▁the ▁d ors al ▁fin ▁slightly ▁ahead ▁of ▁the ▁anal . ▁ ▁Ca ud al ▁fins ▁are ▁rounded ▁with ▁well - develop ed ▁fl anges ▁along ▁the ▁ca ud al ▁ped un cle ▁reaching ▁nearly ▁to ▁the ▁posterior ▁edges ▁of ▁the ▁d ors al ▁and ▁anal ▁fins . ▁ ▁Green ish ▁brown ▁in ▁colour , ▁sometimes ▁golden , ▁they ▁are ▁ ▁grey ish ▁on ▁their ▁vent ral ▁surfaces , ▁and ▁marked ▁with ▁irregular ▁dark er ▁m ott led ▁bands ▁and ▁bl ot ches ▁over ▁the ▁back , ▁sides , ▁and ▁fin ▁bases . ▁ ▁Its ▁length ▁is ▁up ▁to ▁ 1 4 0   mm ; ▁commonly ▁it ▁grows ▁to ▁ 8 0   mm . ▁ ▁Hab itat ▁▁ ▁This ▁species ▁is ▁found ▁mostly ▁in ▁mud dy ▁sw amps , ▁mar sh es ▁and ▁dra ins ▁with ▁heavy ▁veget ation . ▁ ▁The ▁fragment ed ▁populations ▁in ▁Victoria ▁are ▁likely ▁to ▁be ▁rem n ants ▁of ▁a ▁larger ▁continuous ▁population ▁before ▁European ▁settlement . ▁ ▁Import ance ▁to ▁humans ▁▁ ▁Although ▁individuals ▁would ▁be ▁taken ▁as ▁part ▁of ▁the ▁Tas man ian ▁white b ait ▁fish ery , ▁the ▁numbers ▁of ▁this ▁species ▁involved ▁is ▁likely ▁to ▁be ▁quite ▁small . ▁ ▁It ▁adapt s ▁well ▁to ▁capt ivity ▁and ▁is ▁easy ▁to ▁keep , ▁but