Originally Posted by alLexX
you are WAY overstocked,the silver sharks(assuming that there bala sharks) will get up to a foot long,and the rainbow shrks will kill each other.and need a bigget tank.
+1 with what alLexX said
150L comes to about 40 Gallons (slightly less) which is way too small for the Rainbow Sharks ... never mind the Balas for now. The Rainbows ... I'm assuming they're juveniles(can reach 6 inches) ... will become territorial with each other as they grow ... will not be pretty. It is usually recommended to have 1 in a 55 Gallon by itself with plenty of caves and rocks to claim as its territory. 2 would require a minimum 75 Gallon so each has its territory to claim ... so you can imagine 3 in a 40 Gallon.
I recommend you return them to the store if possible .. or get a way bigger tank ... same with the Bala Sharks ... they get a foot or so.
75g Planted Barbs Denison, BlackRuby, Tiger, Albino Tiger, Green Tiger, Cherry, Gold, Checkered, Odessa.
NonBarbs Cardinal, Neon, RummyNose, Bloodfin Tetras, Z. Danios. 1RTS. Amano, Bamboo, Ghost & RCS. 20g Long Shrimp Tank RCS, Tiger, Amano.