Hi, We are in the process of obtaining and setting up a 4ft bow fronted Jewel 260Ltr tank 121 x 46 x 64. After a fish-less cycle has been completed we would like to add the following species.
Our questions are.:
1 Are they suitable tank mates,
10 X Blue Tetra - good
6 x Cherry Barb - good
1 x Striped talking catfish - grows to 20cm so I wouldn't
1 x Red tailed black shark - bad: aggressive, most sharks are
6 x Chain Loach - good
1 x Male S F F - ...? Betta spendens? bad
6 x Black Molly - good
4 x Peacock Gogy - good, although having kept them myself, I would definitely recommend them for smaller tanks and with smaller fish
10 x Zebra Danios - good
10 x Galaxy Rasbora - I wouldn't, I would recommend a smaller tank for them and no larger fish
4 x celebrity Rainbow - bad: schooling so keep 6+, too fragile for the rest, I would keep in smaller tank without larger fish
Here is what I would do with that list:
10 blue tetra
10 cherry barbs (4m 6f)
10 zebra danios
(may be possible to increase all of the above to 15 each later)
10 chain loaches
1m 2f lace gourami or three spot gourami (aka blue gourami, aka gold gourami) OR a group of dwarf gouramis OR a group of honey gouramis
1m 1f Bolivian rams
I actually personally prefer to have fewer species, but in larger groups so am more likely to have even only two species of mid-water schoolers.
2 What would be the order of introducing them.
After a fish-less cycle with 5ppm ammonia you should be able to add all the fish at the same time. If you do not, the extra filter bacteria may start dying off.
3 Have we over stocked our tank.
See above.. if you are only starting with a tank like this, I would recommend slightly understocking (see my suggestion based on your list) and then maybe increasing school numbers later if you think it would benefit the tank.
You seen to have done much research, so
p.s. about the Betta: in a 4fter, it would be lost. The reason 30-60 litres is ideal for them is because in larger tanks they can't defend their territory (the tank itself) so stress themselves out trying to patrol the whole thing.. well, a plakat Betta might be able to do it in larger tanks, but not a fancy.