Stocking Question

[Dunkal]

I have a 70 litre fully cycled tank. It is planted with a few ornaments and an internal filter.
Current fish are- 5 x ray tetras and 3 cherry barbs. I have had them for 3 weeks now.
I want to add 2/3 ottos and 3 more cherry barbs. Would this be overstocking the tank??
Thanks
Karl

 

[mark.w.jones]

70 litres is about 19 US gallons so that's around 19" of adult fish. All of those fish species reach about 2" at adult size give or take a little. I would personally say you would be over stocked if you went for that many. You could probably just about get away with 3 otos at most but no more cherry barbs. Your otos should really be in a group of 5+ so 3 is not ideal but just about OK. Your only other option is a bigger tank!