▁known ▁as ▁w art ▁sn akes , ▁Java ▁w art ▁sn akes , ▁file ▁sn akes , ▁ele ph ant ▁tr unk ▁sn akes , ▁or ▁dog face ▁sn akes ▁are ▁a ▁mon og ener ic ▁family ▁created ▁for ▁the ▁genus ▁Ac ro ch ord us . ▁This ▁is ▁a ▁group ▁of ▁primitive ▁aqu atic ▁sn akes ▁found ▁in ▁Australia ▁and ▁tropical ▁Asia . ▁Currently , ▁three ▁species ▁are ▁recognized . ▁ ▁Description ▁All ▁are ▁entirely ▁aqu atic , ▁lack ing ▁the ▁broad ▁bel ly - scal es ▁found ▁in ▁most ▁other ▁sn akes ▁and ▁possess ing ▁d ors ally ▁located ▁eyes . ▁Their ▁most ▁notable ▁feature ▁is ▁their ▁skin ▁and ▁scales . ▁The ▁skin ▁is ▁loose ▁and ▁bag gy , ▁giving ▁the ▁impression ▁of ▁being ▁several ▁sizes ▁too ▁large ▁for ▁the ▁s nake , ▁and ▁the ▁scales , ▁rather ▁than ▁over la pping , ▁are ▁tiny ▁py ram idal ▁pro jections ▁that ▁led ▁to ▁their ▁common ▁names . ▁ ▁These ▁sn akes ▁are ▁amb ush ▁pred ators , ▁l ur king ▁at ▁the ▁bottom ▁of ▁rivers , ▁streams ▁and ▁est u aries , ▁and ▁waiting ▁for ▁fish ▁to ▁approach , ▁which ▁they ▁g rip ▁with ▁their ▁co ils . ▁The ▁rough ▁scales ▁allow ▁them ▁to ▁hold ▁the ▁fish ▁despite ▁the ▁m uc us ▁co ating . ▁Ad ult s ▁grow ▁to ▁between ▁ 6 0   cm ▁and ▁ 2 . 4 3   m ▁in ▁length . ▁ ▁Geographic ▁range ▁Found ▁from ▁western ▁India ▁and ▁Sri ▁L anka ▁through ▁tropical ▁S