▁upper ▁T iet ê ▁River ▁bas in ▁in ▁the ▁rib e ir ão ▁Grande , ▁a ▁trib ut ary ▁of ▁the ▁middle ▁course ▁of ▁the ▁r io ▁Para í ba ▁do ▁Sul , ▁P ind am on hang aba , ▁in ▁the ▁head w aters ▁of ▁r io ▁It ating a , ▁a ▁coast al ▁river ▁of ▁São ▁Paulo , ▁and ▁in ▁the ▁upper ▁and ▁lower ▁courses ▁of ▁the ▁Ju qui á ▁River ▁of ▁the ▁R ibe ira ▁de ▁I gu ape ▁River ▁bas in , ▁all ▁rivers ▁of ▁São ▁Paulo , ▁Brazil . ▁Like ▁other ▁members ▁of ▁the ▁sub family ▁Hy po ptop om at inae , ▁Pseud ot oc in clus ▁is ▁primarily ▁her b iv orous ▁and ▁is ▁more ▁commonly ▁found ▁at ▁or ▁near ▁the ▁upper ▁portion ▁of ▁the ▁water ▁column . ▁It ▁lives ▁in ▁close ▁association ▁with ▁sub - sur face ▁structures ▁provided ▁by ▁sub mer ged ▁tree ▁branches , ▁aqu atic ▁macro phy tes , ▁and ▁terrest rial ▁grass ▁bl ades ▁growing ▁along ▁cre ek ▁marg ins ▁and ▁extending ▁into ▁the ▁water . ▁ ▁Description ▁The ▁genus ▁Pseud ot oc in clus ▁can ▁be ▁distinguished ▁from ▁other ▁gener a ▁of ▁the ▁sub family ▁Hy po ptop om at inae ▁by ▁the ▁presence ▁of ▁a ▁ca ud al ▁ped un cle ▁that ▁is ▁nearly ▁square ▁in ▁cross ▁section ▁from ▁the ▁posterior ▁base ▁of ▁the ▁d ors al ▁fin ▁to ▁the ▁ca ud al ▁fin , ▁as ▁well ▁as ▁having ▁ 2 6 ▁or ▁more ▁pl ates ▁along ▁the ▁later