New freshwater tank

Your catfish will both need to be in a 10'x5' tank minimum.
Arowana need a 8' tank when it is fully grown.
Reticulated stingrays need a 180 gallon tank,and are not advised for beginers.If yours are not retics,they need a 8' tank as well.

These fish,if adequately feed,will outgrow that tank in a few months.
What are you planning on doing with them when that happens?

75 gallons is big enough for your JD,and maybe one more larger SA/CA cichlid.It depends on the fish's temperment if it will tollerate a tank mate though.
 
A 300g tank will still be way to small for some of those fish, you are going to need a 1000g+ tank to be able to keep all of those fish.
 
nice set up! I think sting rays need very large brackish tank for longevity though.:uhoh:
 
Nice fish, though you may need a larger tank soon...

:iagree:

You will need a way bigger tank soon. Even a 300 might be too small. Id go 500+ and even then you will prolly need to go larger or sell some fish.
 
Sorry for the incorrect statement, Yes There are FW species of rays I was thinking marine. Thanks for correcting me.:uhoh:
 
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