▁hydro elect ric ity ▁but ▁further ▁studies ▁are ▁needed . ▁It ▁is ▁caught ▁by ▁fish eries ▁and ▁is ▁of ▁high ▁economic ▁value . ▁Se vere ▁fish ing ▁explo itation ▁happens ▁from ▁December ▁to ▁May ▁in ▁high ▁production ▁places ▁such ▁Red ▁River . ▁It ▁is ▁considered ▁V ul ner able ▁in ▁Vietnam ▁and ▁IU CN ▁says ▁although ▁this ▁species ▁could ▁actually ▁be ▁Near ▁Th re aten ed , ▁it ▁is ▁listed ▁as ▁Data ▁Def ic ient ▁due ▁to ▁lack ▁of ▁information . ▁ ▁References ▁▁ ▁Category : S is or idae ▁Category : Cat fish ▁of ▁Asia ▁Category : F resh water ▁fish ▁of ▁China ▁Category : F ish ▁of ▁La os ▁Category : F ish ▁of ▁Vietnam ▁Category : F ish ▁described ▁in ▁ 2 0 0 0 <0x0A> </s> ▁Ar p ▁ 1 4 7 ▁( also ▁known ▁as ▁IC ▁ 2 9 8 ) ▁is ▁an ▁interact ing ▁pair ▁of ▁ring ▁galaxies . ▁It ▁lies ▁ 4 3 0 ▁million ▁to ▁ 4 4 0 ▁million ▁light ▁years ▁away ▁in ▁the ▁const ell ation ▁Cet us ▁and ▁does ▁not ▁appear ▁to ▁be ▁part ▁of ▁any ▁significant ▁galax y ▁group . ▁The ▁system ▁was ▁originally ▁discovered ▁in ▁ 1 8 9 3 ▁by ▁Steph ane ▁J av elle ▁and ▁is ▁listed ▁in ▁the ▁Atlas ▁of ▁P ec uliar ▁Gal ax ies . ▁ ▁The ▁system ▁was ▁formed ▁when ▁a ▁spir al ▁galax y ▁( image ▁right ) ▁coll ided ▁with ▁an ▁elli pt ical ▁galax y ▁( image ▁left ). ▁The ▁collision