Little BIG FISH.. any advice.

[monstercatfish]

Hi forum users.
I have a small aquarium at the moment. My tank houses a red tail catfish, a shovelnose catfish, a pangasius catfish, an oscar, a clown knife, a blood parrot, 2 rosy barbs, peacock eel, and bumblebee catfish. The tank is 1m x 60cm x 50cm, i know people are going to complain about the fish i have in this tank but dont worry they are still really small in comparison to the tank. I know they get REAL big later on in life and i am busy researching a pond. I am mainly concerned about the bigger catfish. What volume must my pond be to adequately house the redtail shovelnose pangasius and clown knife.
Thanks a lot

 

[aidenb]

volume doesn't matter as much as size. for a red tail and pangasius i'd go 12 feet long, 4 feet wide, and 3-4 feet deep. Also, the red-tail will eat the parrots, barbs, eel, oscar, and possibly the clown knife if the growth rate can't keep up.

 

[monstercatfish]

iv already lost a poliptrus to my shovelnose :< hoping to build the pond before the eel goes, it is one of my favourite fish